phy k2,3 trial spm 2012 kelantan

SULIT 4531/2

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The following information may be useful. The symbols have their usual meaning. Maklumat berikut mungkin berfaedah. Simbol-simbol mempunyai makna yang biasa. 1. a = 16. Power, P =

2. v2 = u2 + 2as Kuasa, P =

3. s = ut + ½ at2

17. V = IR

4. Momentum = mv 18. Power, P = IV Kuasa 5. F = ma 19.

6. Kinetic energy = ½ mv2 20. Efficiency =

Tenaga kinetik Kecekapan 7. Gravitational potential energy = mgh 21.

Tenaga keupayaan graviti

8. Elastic potential energy = ½ Fx 22. n =

Tenaga keupayaan kenyal

9. ρ = 23. n =

10. Pressure, P = hρg n = Tekanan

11. Pressure, P = 24. λ =

Tekanan 25. Q= It 12. Heat, Q = mcθ Haba 26. E = I (R + r) 13. = Constant (pemalar) 27. eV = ½ mv

2

14. E = m c2 28.

PERCUBAAN SPM 2012 KELANTAN FIZIK KERTAS 2, 3

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15. v = f λ 29. g = 10 ms

-2

SECTION A BAHAGIAN A

[60 marks] [60 markah]

Answer all questions in this section. Jawab semua soalan dalam bahagian ini.

1. Diagram 1.1 shows a measuring instrument that normally used in our daily life. Rajah 1.1 menunjukkan alat pemgukur yang biasa digunakan dalam kehidupan harian.

Diagram 1.1 Rajah 1.1

(a) Name the physical quantity can be measured by the instrument? Namakan kuantiti fizik yang boleh diukur oleh alat itu ? .............................................................................................................................

[1 mark] [1 markah]

(b) Diagram 1.2 and Diagram 1.3 show two scales of compression balances . Rajah 1.2 dan 1.3 menunjukkan dua skala bagi neraca mampat .

kg

g

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Diagram 1.2 Diagran 1.3 Rajah 1.2 Rajah 1.3

(i) Which compression balance is more sensitive ? Neraca mampat yang manakah lebih peka? . ..................................................................................................................

[1 mark] [1 markah]

(ii) Give one reason for answer in 1b(i). Beri satu sebab bagi jawapan di 1b(i) ..................................................................................................................

[1 mark] [1 markah]

(c) Give one method to increase the accuracy of readings. Beri satu kaedah untuk meningkatkan kejituan bagi bacaan. ..............................................................................................................................

[1 mark] [1 markah]

2. Diagram 2.1 shows a water waves travelling from deep area to a shallow area. Rajah 2.1 menunjukkan gelombang air bergerak daripada kawasan dalam ke kawasan cetek.


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(a) What type of wave is the water waves? Apakah jenis gelombang bagi gelombang air?/ .............................................................................................................................

[1 mark] [1 markah]

(b) Complete Diagram 2.1 to show the direction of propagation of the water waves in deep area and shallow area. Draw the waves’ patterns in both areas. Lengkapkan Rajah 2.1 untuk menunjukkan arah perambatan bagi gelombang air itu dalam kawasan dalam dan kawasan cetek. Lukis corak gelombang dalam kedua-dua kawasan.


(c) Calculate the wavelength at deep area if the speed of water waves at shallow area and deep area are 4.0 ms-1 and 9.0 ms-1

The wavelength at shallow area is 2 m. , respectively.

Hitung jarak gelombang pada kawasan dalam jika laju gelombang air pada kawasan cetek dan kawasan dalam adalah 4.0 ms-1 dan 9.0 ms-1

Jarak gelombang pada kawasan cetek adalah 2m.

, masing- masing.


3. Diagram 3 shows a system used in a factory to ensure the thickness of cardboard sheet is uniform. The system used radioactive source that emits radioactive radiation. Rajah 3 m enunjukkan suatu sistem yang digunakan dalam sebuah kilang untuk memastikan ketebalan kepingan kadbod adalah seragam. Sistem itu menggunakan sumber radioaktif.

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Diagram 3 Rajah 3

(a) What is the meaning of radioactive? Apakah maksud radioaktif? …………………………………………………………................................. [1 mark] [1 markah] (b) Name the suitable type of radioactive radiation should be emitted by the source. Namakan jenis sinaran yang sesuai perlu dipancarkan oleh sumber itu. …………………………………………………………................................. [1 mark] [1 markah] (c) The thickness of cardboard sheets are accepted if the reading of the counter is 230 counts per minute. Ketebalan kepingan kadbod akan diterima jika bacaan pembilang adalah 230 bilangan per minit. (i) If one of the readings shown by the counter is less than 230 counts per minute, what can you say about the thickness of the cardboard sheet compared to the accepted thickness? Jika satu dari bacaan yang ditunjukkan oleh pembilang itu kurang dari 230 bilangan per minit, apakah yang boleh anda katakan mengenai

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ketebalan kepingan kadbod itu berbanding dengan nilai ketebalan yang diterima? Tick (√ ) the correct answer in the box provided. Tanda (√ ) jawapan betul dalam kotak yang disediakan. The cardboard sheet is thicker. Kepingan kadbod itu lebih tebal. The cardboard sheet is thinner. Kepingan kadbod itu lebih nipis.

[1 mark] [1 markah]

(ii) Give one reason for the answer in 3(c) (i). Beri satu sebab bagi jawapan bagi 3(c) (i).

………………………………………………………………............… [1 mark]

[1 markah]

(d) The initial mass of the radioactive source used is 100.0 g. The mass of the source becomes 12.5 g after it is being used for 9 years. Jisim awal bahan radioaktif yang digunakan ialah 100.0 g. Jisim bahan itu menjadi 12.5 g selepas ia digunakan selama 9 tahun. Calculate the half life of the radioactive source? Hitung separuh hayat bahan radioaktif itu?


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4. Diagram 4 shows the use of a transistor in a circuit. Rajah 4 menunjukkan kegunaan transistor dalam suatu litar.

Diagram 4 Rajah 4

(a) Name the type of transistor used. Namakan jenis transistor yang digunakan. .....………..……………………………………………..………………………

[1 mark] [1 markah]

(b) State the function of Nyatakan fungsi (i) relay switch. suis geganti.

………………………………………………………………………… [1 mark] [1 markah]

(ii) resistor R perintang R

1

1

………………………………………………………………………… [1 mark] [1 markah]

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(c) The transistor is switched on when the base voltage V2

Calculate the minimum value of R ≥ 2 V.

2

Transistor itu dihidupkan apabila voltan tapak V when the transistor is switched on.

2

Hitungkan nilai minimum R ≥ 2 V

2

apabila transistor itu dihidupkan


(d) The resistor R2

Perintang R

is then replaced with a light dependent resistor, LDR,which has high resistance when it is dark.

2

kemudian digantikan dengan perintang peka cahaya,PPC, yang mempunyai rintangan tinggi apabila gelap.

(i) State whether the bulb lighted up during the day. Nyatakan sama ada mentol itu menyala pada waktu siang. ...........……………………………………………..…………………....

[1 mark] [1 markah]

(ii) Give one reason for the answer in 4 (d) (i). Beri satu sebab bagi jawapan di 4 (d) (i).

...........……………………………………………..…………………....

[1 mark] [1 markah]

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5. Diagram 5.1 and 5.2 show two identical springs supporting two babies, P and Q, of mass, 5 kg and 8 kg respectively. Rajah 5.1 dan 5.2 menunjukkan dua spring yang serupa menampung dua orang bayi , P dan Q berjisim 5 kg dan 8 kg masing-masing. Diagram 5.1 Diagram 5.2 Rajah 5.1 Rajah 5.2 (a) What is the meaning of mass? Apakah yang dimaksudkan dengan jisim? …………………………………………………………......................................

[1 mark] [1 markah]

(b) Observe Diagram 5.1 and Diagram 5.2, Perhatikan Rajah 5.1 dan Rajah 5.2, (i) compare the mass of the baby bandingkan jisim bayi. ...........……………………………………………..…………………....

[1 mark] [1 markah]

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(ii) compare the extension of the spring, y. bandingkan pemanjangan spring, y. ...........……………………………………………..…………………....

[1 mark] [1 markah]

(iii) compare the spring constant of the spring bandingkan pemalar spring bagi spring ...........……………………………………………..…………………....

[1 mark] [1 markah]

(c) (i) Relate the mass of the baby with the extension of the spring. Hubungkaitkan jisim bayi dengan pemanjangan ………………………………………………….....................................

[1 mark] [1 markah]

(ii) State the physics law involved. Nyatakan hukum fizik yang terlibat. …………………………………………………. ....................................

[1 mark] [1 markah]

(d) Another identical spring is hung parallel with the spring in Diagram 5.1. Satu spring yang serupa digantung selari dengan spring dalam Rajah 5.1. (i) What happens to the extension of the spring? Apakah yang berlaku kepada pemanjangan spring? ...........……………………………………………..…………………....

[1 mark] [1 markah]

(ii) Give one reason to the answer in 5(d)(i). Beri satu sebab bagi jawapan dalam 5(d)(i). ...........……………………………………………..…………………....

[1 mark] [1 markah]

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6. Diagram 6.1 and Diagram 6.2 show current is induced in the coils when similar magnets are dropped into the coils from the same height. Rajah 6.1 dan R ajah 6.2 menunjukkan arus diaruhkan dalam gegelung-gegelung apabila dua batang magnet yang serupa dijatuhkan ke dalam gegelung-gegelung itu dari ketinggian yang sama.

Diagram 6.1 Diagram 6.2 Rajah 6.1 Rajah 6.2 (a) What is meant by induced current? Apakah yang dimaksudkan dengan arus aruhan? …………………………………………………………......................................

[1 mark] [1 markah]

(b) (i) Give one reason why current is induced in the coil. Berikan satu sebab mengapa arus diaruhkan dalam gegelung. ...........……………………………………………..………………….....

[1 mark] [1 markah]

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(ii) Using an arrow, show the direction of the induced current in Diagram 6.1 Menggunakan anak panah, tunjukkan arah arus aruhan di Rajah 6.1.

[1 mark] [1 markah]

(iii) Name the law used to determine the direction of the induced current in 6(b) (ii). Namakan hukum yang digunakan untuk menentukan arah arus aruhan dalam 6(b)(ii). ...........……………………………………………..…………………....

[1 mark] [1 markah]

(c) Based on Diagram 6.1 and Diagram 6.2, compare Berdasarkan Rajah 6.1 dan Rajah 6.2 bandingkan, (i) number of turns of the coils bilangan lilitan gegelung ...........……………………………………………..…………………....

[1 mark] [1 markah]

(ii) deflection of the pointer of the galvanometer pesongan jarum galvanometer ...........……………………………………………..…………………....

[1 mark] [1 markah]

(d) State the relationship between number of turns of the coil and, Nyatakan hubungan antara bilangan lilitan gegelung dan, (i) deflection of the pointer of the galvanometer. pesongan jarum galvanometer ...........……………………………………………..…………………....

[1 mark] [1 markah]

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(ii) magnitude of current flows in the coils. magnitud arus yang mengalir dalam gegelung ...........……………………………………………..…………………....

[1 mark] [1 markah]

7. Diagram 7.1 shows the structure of mirror periscope. Rajah 7.1 menunjukkan struktur bagi periskop cermin.


(a) Name the light wave phenomenon shown in Diagram 7.1.

Namakan fenomena gelombang cahaya yang ditunjukkan dalam Rajah 7.1.

…………………………………………………………...................................... [1 mark] [1 markah]

(b) (i) On Diagram 7.1, complete the path of light ray from the object to the observer’s eye. Pada Rajah 7.1, lengkapkan lintasan sinar cahaya daripada objek ke mata pemerhati.


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(ii) State one characteristics of the image observed. Nyatakan satu ciri imej yang diperhatikan.

...........……………………………………………..………………….....

[1 mark] [1 markah]

(c) Diagram 7.2 shows a glass prism. Rajah 7.2 menunjukkan satu prisma kaca


(i) The critical angle of the glass prism is 420

Calculate the refractive index of the glass prism. .

Sudut genting bagi prisma kaca adalah 42 Hitung indeks biasan bagi prisma kaca itu.

0


(ii) What happens to the light ray after passing point P? Apakah yang berlaku kepada sinar cahaya itu selepas melalui titik P? ...........……………………………………………..…………………....

[1 mark] [1 markah]

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(iii) On Diagram 7.2, complete the path of light ray from point P. Pada Rajah 7.2 lengkapkan lintasan sinar cahaya daripada titik P.

[1 mark] [1 markah]

(d) The mirror periscope in Diagram 7.1 cannot produced a clear image. Periskop cermin dalam Rajah 7.1 tidak boleh menghasilkan imej yang jelas. (i) In the space below, draw the arrangement of the glass prisms in Diagram 7.2 to enable clearer image produced. Pada ruang di bawah, lukis susunan prisma kaca dalam Rajah 7.2 bagi membolehkan imej yang lebih jelas dihasilkan.

[1 mark] [1 markah]

(ii) Give one reason for the answer in 7(d)(i). Beri satu sebab bagi jawapan dalam 7(d)(i). ...........……………………………………………..………………….....

[1 mark] [1 markah]

8. (a) A solid substance of mass 0.05 kg is heated using an immersion heater of 240V, 1 kW for 1.0 minute until its temperature is 78o

Suatu bahan pepejal berjisim 0.05 kg dipanaskan menggunakan pemanas rendam 240 V, 1 kW selama 1 minit sehinggan suhunya adalah 78

C

o

C.

(i) What is the meaning of temperature? Apakah yang dimaksudkan dengan suhu? ..................................................................................................................

[1 mark] [1 markah]

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(ii) Calculate the specific heat cpacity of the substance if the initial temperature of the substance is 20o

Hitung muatan haba tentu bagi bahan itu jika suhu awal bahan itu adalah 20

C?

o

C?


(b) The substance is then put into a beaker filled with water of mass 2.0 kg and temperature 28o

Bahan itu kemudiannya diletakkan ke dalam bikar berisi air berjisim 2.0 kg dan suhu 28

C.

o

C.

Calculate the final temperature of the substance and water. Hitung suhu akhir bagi bahan itu dan air. (Specific heat capacity of water is 4 200 Jkg-1oC-1

(Muatan haba tentu bagi air adalah 4 200 Jkg)

-1oC-1

)


(c) Diagram 8.1 shows parts of the ice box used to store ice. Rajah 8.1 menunjukkan bahagian bagi kotak ais.


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Table 8 shows the characteristics of two different ice boxes. Jadual 8 menunjukkan ciri-ciri bagi dua kotak ais yang berbeza.

Table 8 Jadual 8

Based on Table 8, state the suitable characteristics of the ice box to be used as an efficient ice storage . Give one reason for suitable characteristics. Berdasarkan Jadual 8, nyatakan ciri-ciri kesesuaian kotak ais untuk digunakan sebagai tempat simpanan ais yang cekap. Beri satu sebab untuk kesesuaian ciri itu. (i) Material X : Bahan X : .................................................................................................................. Reason : Sebab : ..................................................................................................................


(ii) The specific heat capacity of inner box : Muatan haba tentu bagi kotak dalam : ..................................................................................................................

Ice box Kotak ais

Material X Bahan X

Specific heat capacity of inner box

Muatan haba tentu bagi kotak dalam

Diameter of double walled tube

Diameter bagi tiub dinding dua lapis

R Air

Udara Small Kecil

Small Kecil

S Polystyrene Polisterin

Big Besar

Big Besar

T Polystyrene Polisterin

Small Kecil

Big Besar

U Air

Udara Big

Besar Big

Besar

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Reason : Sebab : ................................................................................................................


(iii) Diameter of double walled tube : Diameter bagi tiub dinding dua lapis : .................................................................................................................. Reason : Sebab : ................................................................................................................


(d) Based on the answers in 8(c) (i), 8(c)(ii) and 8(c)(iii), determine the most suitable ice box to be used as an efficient ice storage . Berdasarkan jawapan di 8(c) (i), 8(c)(ii) dan 8(c)(iii), tentukan kotak ais yang paling sesuai digunakan sebagai tempat simpanan ais yang efisien. ..............................................................................................................................

[1 mark] [1 markah]

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SECTION B BAHAGIAN B


Answer any one question from this section. Jawab mana-mana satu soalan daripada bahagian ini.

9. Diagram 9.1 and Diagram 9.2 show the distances between two streams of water, x1

and x2

Rajah 9.1 dan R ajah 9.2 menunjukkan jarak di antara dua al iran air, x

when air are blown in the middle with two tubes which nozzles have different cross sectional areas. The air pressure supplied at both tubes is the same.

1 dan x 2

apabila udara ditiup pada bahagian tengah dengan dua tiub yang mana muncungnya mempunyai luas keratan rentas yang berbeza. Tekanan udara yang dibekalkan pada kedua-dua tiub adalah sama.

Diagram 9.1 Diagram 9.2 Rajah 9.1 Rajah 9.2 (a) What is the meaning of pressure? [1 mark] Apakah maksud tekanan? [1 markah] (b) Using Diagram 9.1 and Diagram 9.2, Menggunakan Rajah 9.1 dan Rajah 9.2, (i) compare the cross sectional area of the nozzles [1 mark] bandingkan luas keratan rentas bagi muncung [1 markah] (ii) compare the distance between the two streams of water, x1 and x2 .

[1 mark]

bandingkan jarak di antara dua aliran air, x1 dan x2. [1 markah]

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(iii) relate the cross sectional area of the nozzle with the speed of the air at the nozzle. [1 mark] hubungkait luas keratan rentas muncung dengan laju udara pada muncung. [1 markah] (iv) relate the air pressure with the distance, x in between two streams of water. [1 mark] hubungkait tekanan udara dengan jarak, x di antara dua aliran air itu. [1 markah] (v) deduce the relationship between the speed of air with the air pressure [1 mark] deduksikan hubungan antara laju udara dengan tekanan udara

[1 markah] (c) Diagram 9.3 shows a Bunsen burner. Rajah 9.3 menunjukkan satu penunu Bunsen.


Explain how the Bunsen burner can produce a blue flame. [4 marks] Terangkan bagaimana penunu Bunsen boleh menghasilkan nyalaan biru. [4 markah] (d) Diagram 9.4 shows a submarine. Rajah 9.4 menunjukkan sebuah kapal selam.

Diagram 9.4

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Rajah 9.4 Using appropriate physics concepts, explain the suitable characteristics of the submarine that can work efficiently and safe. Menggunakan konsep-konsep fizik yang sesuai, terangkan ciri-ciri kapal selam yang sesuai yang boleh bekerja dengan cekap dan selamat. Your answer should include the following aspects: Jawapan anda hendaklah merangkumi aspek-aspek berikut: (i) Shape of the submarine [2 marks] Bentuk kapal selam. [2 markah] (ii) Strength of material used for body of the submarine [2 marks] Kekuatan bahan yang digunakan untuk badan kapal selam [2 markah] (iii) Rate of rusting for the material used. [2 marks] Kadar pengaratan untuk bahan yang digunakan. [2 markah] (iv) Component which enable the submarine to submerge and float.

[2 marks] Komponen yang membolehkan kapal selam menyelam dan terapung.

[2 markah] (v) Type of power source used. [2 marks] Jenis sumber tenaga yang digunakan. [2 markah] 10. Diagram 10.1 and Diagram 10.2 show traces on the screen of a Cathode Ray Oscilloscope (C.R.O) when connected to the output ac generators of different frequency. Rajah 10.1 dan Rajah 10.2 menunjukkan surihan pada skrin sebuah Osiloskop Sinar Katod (O.S.K) apabila disambung kepada output sebuah penjana a.u yang berbeza frekuensi. Diagram 10.1 Diagram 10.2 Rajah 10.1 Rajah 10.2 (a) What is meaning of frequency? [1 mark]

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Apakah maksud frekuensi? [1 markah] (b) Using Diagram 10.1 and Diagram 10.2, compare the amplitude, number of complete oscillations and period of the traces. Relate the number of complete oscillations with the period of oscillation to make a deduction regarding the relationship between period and frequency.

[5 marks] Menggunakan Rajah 10.1 dan Rajah 10.2, bandingkan amplitud, bilangan ayunan lengkap dan tempoh bagi surihan itu. Hubungkait bilangan ayunan lengkap dengan tempoh ayunan untuk membuat satu deduksi berkaitan dengan hubungan antara tempoh dengan frekuensi.

[5 markah] (c) Diagram 10.3 shows a loud speaker produces sound waves in air. Rajah 10.3 menunjukkan satu pembesar suara menghasilkan gelombang air di udara.


. Explain how the sound waves is produced . [4 marks] Terangkan bagaimana gelombang bunyi dihasilkan. [4 markah]

( d ) Diagram 10.4 shows a radar system at an airport. Rajah 10.4 menunjukkan satu sistem radar di sebuah lapangan terbang.

Diagram 10.4

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Rajah 10.4 Using appropriate physics concepts, explain the modifications should be done on the system so that it can be used to determined the position of an aeroplane more efficiently. Menggunakan konsep-konsep fizik yang sesuai, terangkan pengubahsuaian yang perlu dilakukan ke atas sistem itu supaya ia boleh digunakan untuk menentukan kedudukan kapal terbang dengan lebih cekap Your answer should include the following aspects : Jawapan anda hendaklah merangkumi aspek-aspek berikut: (i) Diameter of the parabolic disc. [2 marks] Diameter piring parabola. [2 markah]

(ii) Distance of the signal receiver from the centre of the parabolic disc. [2 marks]

Jarak penerima isyarat dari pusat piring parabola. [2 markah]

(iii) Type of wave transmitted 2 marks] Jenis gelombang yang dipancar [2 markah] (iv) Height of the parabolic disc from the ground. [2 marks]

Ketinggian piring parabola dari bumi. [2 markah]

(v) Characterictics of the surface of the parabolic disc. [2 marks] Ciri-ciri bagi permukaan pring parabola [2 markah]

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SECTION C

BAHAGIAN C [20 marks]

[20 markah] Answer any one question from this section.

Jawab mana-mana satu soalan daripada bahagian ini. 11. Diagram 11.1 shows a vibrating pile driver used to drive a steel pile to the ground. The force involved in driving the steel pile is impulsive force. Rajah 11.1 menunjukkan satu pelantak cerucuk yang digunakan untuk menanam cerucuk besi ke dalam tanah. Daya yang terlibat dalam menanam cerucuk besi ini adalah daya impuls.


(a) (i) What is the meaning of impulsive force? [1 mark]

Apakah yang dimaksudkan dengan daya impuls? [1 markah] (ii). Explain how the steel pile is driven to the ground. [4 marks] Terangkan bagaimana cerucuk besi ditanam ke dalam tanah.

[4 markah]

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(b) Diagram 11.2 .shows a tennis player is hitting a tennis ball with his racket. Rajah 11.2 menunjukkan seorang pemain tenis memukul bola tenis dengan menggunakan raketnya.


You are required to investigate the techniques done by the player and the characteristics of the racket’s string as shown in Table 11. Anda dikehendaki menyiasat teknik yang dibuat oleh pemain itu dan ciri-ciri tali raket seperti ditunjukkan dalam Jadual 11.

Techniques and

characteristics of string Teknik dan ciri-ciri tali

Action after hitting the ball

Tindakan selepas memukul bola

Time of contact between the ball

and racket Masa tindakan

antara bola dengan raket

String tension

Tegangan tali

Material of the string

Bahan tali raket

P

Continue to swing the racket after hitting the ball Meneruskan ayunan raket

selepas memukul bola

Long Panjang

High Tinggi

Steel Besi

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Q

Continue to swing the racket after hitting the ball Meneruskan ayunan raket

selepas memukul bola

Short Singkat

High Tinggi

Nylon Nilon

R

Stops the racket immediately

after hitting the ball

Menghentikan raket sebaik

sahaja memukul bola

Short Singkat

Low Rendah

Steel Besi

S

Stops the racket immediately

after hitting the ball

Menghentikan raket sebaik

sahaja memukul bola

Long Panjang

Low Rendah

Nylon Nilon

Table 11 Jadual 11

Explain the suitability of the techniques done by the tennis player and characteristics of the racket’s string. Determine the most effective techniq done by the tennis player and the most suitable characteristics of the racket’s string to produce high speed motion of the tennis ball after being hit. Give reasons for the choice. [10 marks] Terangkan kesesuaian teknik yang dibuat oleh pemain tenis itu dan ciri-ciri bagi tali raket. Tentukan teknik yang paling efektif yang dibuat oleh pemain tenis itu dan ciri- ciri yang paling sesuai bagi tali raket untuk menghasilkan gerakan bola tenis yang berhalaju tinggi selepas dipukul. Beri sebab bagi pilihan itu. [10 markah]

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(c) A tennis ball of mass 100 g is moving at a velocity of 40 m s-1. A player hits the ball and moves in the opposite direction with a velocity of 50 m s -1

The time of collision is 20 ms. .

Sebiji bola tenis berjisim 100 g sedang bergerak pada halaju 40 m s-1. Seorang pemain memukul bola itu dan bergerak dalam arah berlawanan dengan halaju 50 m s -1

. Masa perlanggaran aalah 20 ms.

Calculate: Hitungkan:

(i) The mass of ball in unit kg. [1 mark] Jisim bola dalam unit kg. [1 markah]

(ii) The time of collision in unit second. [1 mark] Masa hentaman dalam unit saat. [ 1markah] (iii) Impulsive force acted on the tennis ball. 3 marks] Daya impuls yang bertindak ke atas bola tenis itu. [3 markah] 12. Diagram 12.1 shows two identical bulbs that are connected to a dry cell and an ammeter. The current flows through the bulbs is measured by the ammeter. Rajah 12.1 menunjukkan dua biji mentol yang serupa disambungkan kepada suatu sel kering dan sebuah ammeter. Arus yang mengalir melalui mentol itu diukur oleh oleh ammeter itu.

Diagram 12.1

Rajah 12.1

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(a) What is the meaning of current? [1 mark] Apakah maksud arus? [1 markah] (b) (i) Name the type of connection of the bulbs. [1 mark] Namakan jenis sambungan mentol. [1 markah] (ii) Draw the circuit diagram for Diagram 12.1. [1 mark] Lukis rajah litar untuk Rajah 12.1 [1 markah] (iii) Explain what happens to the reading of ammeter when anidentical bulb is connected parallel to points P and Q? [2 marks] Terangkan apa berlaku kepada bacaan ammeter itu apabila sebiji mentol yang serupa disambungkan secara selari pada titik P dan Q. [2 markah]

(c) Diagram 12.2 shows a three pin plug connected to an electric iron labeled 240 V, 1000W. A fuse is installed in the three pin plug. Rajah 12.2 menunjukkan sebuah palam tiga disambungkan kepada sebuah seterika elektrik berlabel 240 V, 1000W. Satu fius dipasangkan dalam palam tiga pin itu.


Table 12 shows the characteristics of metals that could be used as fuse wire. Jadual 12 menunjukkan ciri-ciri logam yang boleh digunakan sebagai dawai fius.

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Metal Logam

Melting point (o

Takat lebur(C)

oAmpere value (A)

C) Nilai ampere(A) Diameter of wire Diameter wayar

Resistivity Kerintangan

P High Tinggi 4.2 Big

Besar Low

Rendah

Q Low Rendah 4.0 Small

Kecil High

Tinggi

R Low Rendah 4.2 Small

Kecil High

Tinggi

S High Tinggi 5.0 Big

Besar Low

Rendah

Table 12 Jadual 12

You are required to determined the most suitable metal that can be used as a fuse wire as shown in Diagram 12.2. Anda dikehendaki menentukan logam yang paling sesuai untuk digunakan sebagai dawai fius seperti yang ditunjukkan dalam Rajah 12.2. Study the specifications of the four metals based on the following aspects: Kaji spesifikasi keempat-empat logam itu berdasarkan aspek-aspek berikut: (i) Melting point of wire [2 marks] Takat lebur dawai [2 markah] (ii) Ampere value of the fuse [2 marks] Nilai ampere pada fius [2 markah] (iii) Diameter of wire [2 marks] Diameter dawai [2 markah] (iv) Resistivity of wire [2 marks] Kerintangan dawai [2 markah] (d) Diagram 12.3 shows an energy saver light bulb labeled 240 V 12 W and it is connected to the 240 V power supply. The power released by the bulb is 10 W. Rajah 12.3 menunjukkan sebuah mentol jimar tenaga berlabel 240 V 12W dan disambungkan kepada bekalan kuasa 240 V. Kuasa yang dibebaskan oleh mentol itu ialah 10 W.

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Diagram 12.3

Rajah 12.3 Calculate Hitung (i) the current flows through the bulb. arus yang mengalir melalui mentol. (ii) the power lost from the bulb. kuasa yang hilang daripada mentol itu. (iii) the efficiency of the bulb. kecekapan mentol itu. [5 marks] [5 markah]

END OF QUESTION SOALAN TAMAT

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SULIT NAMA: ………………………………………TING : …………… ANGKA GILIRAN : ……………………………………………..

PEPERIKSAAN PERCUBAAN SIJIL PELAJARAN MALAYSIA 2012 PHYSICS Kertas 3 Ogos / Sept 1 ½ jam Satu jam tiga puluh minit JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU 1. Kertas soalan ini adalah dalam dwibahasa. 2. Soalan dalam bahasa inggeris mendahului soalan sepadan dalam bahasa Melayu 3. Calon dibenarkan menjawab keseluruhan atau sebahagian soalan sama ada dalam bahasa Inggeris atau bahasa Melayu. 4 Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini ______________________________________________________________________ Kertas soalan ini mengandungi 15 halaman bercetak dan ___halaman tidak bercetak. Maklumat berikut mungkin berfeadah . Simbol-simbol mempunyai makna yang biasa.

MAJLIS PENGETUA-PENGETUA SEKOLAH MENENGAH MALAYSIA

CAWANGAN KELANTAN

Untuk Kegunaan Pemeriksa

Kod Pemeriksa : Bahagian

Soalan

Markah Penuh

Markah Diperolehi

A

1

16

2

12

B

3

12

4

12

Jumlah

4531/3

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2

2

Section A

Bahagian A [28 marks]

[28 markah] Answer all questions in this section.

Jawab semua soalan dalam bahagian ini. 1. A student carries out an experiment to investigate the relationship between the length of wire ,l, and the resistance ,R. The arrangement of apparatus is shown in Diagram 1.1. An ammeter , dry cells, a rheostat, a switch and a piece of constantan wire are connected in series. A voltmeter is used to measure the potential difference, V, across the wire of length , l. Seorang murid menjalankan satu eksperimen untuk mengkaji hubungan ant ara panjang suatu dawai, l, dengan rintangan , R. Susunan radas ditunjukkan dalam Rajah 1.1 . Sebuah ammeter, sel kering, reostat, suis dan da wai konstantan disambung secara sesiri. Sebuah voltmeter digunakan untuk mengukur beza keupayaan , V , merentasi dawai sepanjang , l .


A constantan wire of length , l = 20.0 cm is set up by moving the jockey on the wire which is attached to the meter ruler. When the switch is on, the rheostat is adjusted until the ammeter reading is 1.0 A. The voltmeter reading is as shown in Diagram 1.2.

Dawai konstantan dengan panjang, l = 20.0 cm disediakan dengan menekan joki di atas dawai yang dilekatkan pada pembaris meter. Apabila suis dihidupkan , reostat dilaraskan sehingga bacaan ammeter adalah 1.0 A. Bacaan voltmeter, V , adalah sebagaimana ditunjukkan dalam Rajah 1.2.

l

Ammeter Ammeter

Meter ruler Pembaris meter

Jockey Joki

Constantan Wire Dawai konstantan Voltmeter

Voltmeter

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V = …………………V Length of wire, l = 20.0 cm Panjang dawai, l = 20.0 cm Diagram 1.2 Rajah 1.2 The procedure is repeated with length of constantan wire , l = 40.0 cm, 60.0 cm, 80.0 cm and 100.0 cm. The corresponding voltmeter readings across the wire are shown in Diagram 1.3 , 1.4, 1.5 and 1.6. Prosedur diulangi dengan panjang dawai konstantan , l = 40.0 cm, 60.0 cm, 80.0 cm dan 100.0 cm. Bacaan voltmeter yang sepadan yang merentasi dawai adalah ditunjukkan pada Rajah 1.3, 1.4.1.5 dan 1.6 . V = ……………………V V = ………………V Length of wire, l = 40.0 cm Length of wire, l = 60.0 cm Panjang dawai, l = 40.0 cm Panjang dawai, l = 60.0 cm Diagram 1.3 Diagram 1.4 Rajah 1.3 Rajah 1.4

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V = ……………………V V = ………………V Length of wire, l = 80.0 cm Length of wire, l = 100.0 cm Panjang dawai, l = 80.0 cm Panjang dawai, l = 100.0 cm Diagram 1.5 Diagram 1.6 Rajah 1.5 Rajah 1.6 (a) For the experiment describe on page 2 and 3, identify : Bagi eksperimen yang diterangkan di halaman 2 dan 3, kenalpasti; (i) The manipulated variable Pembolehubah dimanipulasikan …………………………………………………………………………………………..

[ 1 mark] [1 markah]

(ii) The responding variable Pembolehubah bergerak balas …………………………………………………………………………………………..


(iii) The constant variable Pembolehubah dimalarkan …………………………………………………………………………………………..


(b) Based on Diagrams 1.2,1.3, 1.4 and 1.5 on pages 3 and 4 : Berdasarkan Rajah 1.2,1.3,1.4 dan 1.5, dihalaman 3 dan 4 : (i) Record the voltmeter reading, V in the spaces provided. Catat bacaan voltmeter , V , dalam ruang yang disediakan .

[ 2 marks] [2 markah]

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(ii) For each value of V in 1(b)(i), calculate the resistance, R by using the following equation; Bagi setiap nilai V di 1(b)(i), hitung rintangan, R dengan menggunakan persamaan berikut;

R =1V .

Record the value of R. Catat nilai R.


(iii) Tabulate your results for all values of l, V and R in the space below. Jadualkan keputusan anda bagi semua nilai l, V , dan R pada ruang di bawah.


(c) On the graph paper on page 6, draw a graph of , R against l . [5 marks] Pada kertas graf di halaman 6, lukis graf , R melawan l. [5 markah] (d) Based on the graph in 1(c), state the relationship between R and l . Berdasarkan graf di 1(c), nyatakan hubungan antara R dengan l . …………………………………………………………………………………………………...


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Graph of , R against l Graf , R melawan l

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2. A student carries out an experiment to investigate the relationship between the image distance, v , and the linear magnification , M of a convex lens . The result of experiment is shown in Diagram 2.1 Seorang pelajar menjalankan eksperimen untuk menyiasat hubungan antara jarak imej, v , dan pembesaran linear, M bagi sebuah kanta cembung. Keputusan eksperimen ditunjukkan dalam

Rajah 2.1 .

0 1 2 3 4

10

60

50

40

30

20

v/ cm

M Diagram 2.1

Rajah 2.1

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(a) (i) What happen to M as v increases ? Apa yang berlaku kepada M apabila v bertambah? …………………………………………………………………………………………..


(ii) Determine the value of v when M = 0. Show on the graph how you determine the value of v. Tentukan nilai v apabila M = 0. Tunjukkan pada graf itu bagaimana anda menentukan nilai v. v = ………………………………………………………………………………………


(b) The focal length of the lens is given by the formula f = k , where k , is the gradient of the graph V against M. Panjang fokus bagi kanta itu diberikan oleh persamaan, f = k , di mana k, ialah kecerunan graf V melawan M. (i) Calculate the gradient , k , of graph . Show on the graph how you calculate the value of k. Hitungkan kecerunan graf, k. Tunjukkan pada graf itu bagaimana anda menghitung nilai k. k = ……………………………………………………………………………………....

[ 3 marks] [ 3 markah]

(ii) Using the formula P = f1 , and the value of k in 2(b)(i), calculate the value of P.

Menggunakan formula P = f1 , dan nilai k dalam 2(b)(i), hitung nilai P.

[ 1 mark] [ 1 markah]

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(c) The magnification of image , M is 2.5. Pembesaran imej, M ialah 2.5. (i) Based on the graph in Diagram 2.1 determine the image distance, v. Show on your graph how you determine v. Berdasarkan graf di Rajah 2.1, tentukan jarak imej, v. Tunjukkan pada graf bagaimana anda menentukan v . v = ……………………………………………………………………………………....


(ii) The formula of lens is given by;

vuf111

+= .

Calculate the object distance, u. Forrmula kanta diberi oleh ;

vuf111

+=

Hitungkan jarak objek , u .


(d) State one precaution that can be taken to improve the accuracy of the reading in this experiment. Nyatakan satu langkah berjaga-jaga yang perlu diambil untuk menambahkan kejituan bacaan dalam eksperimen ini. …………………………………………………………………………………………………..

[ 1 mark] [ 1 markah]

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Section B Bahagian B [ 12 marks] [12 markah]

Answer any one question from this section. Jawab mana-mana satu soalan daripada bahagian ini.

3. Diagram 3.1 and Diagram 3.2 show the conditions of identical metal boxes which are used to cover a camera, tied to a big catfish in a river water and to a small shark in the sea water. Rajah 3.1 dan Rajah 3.2 menunjukkan keadaan kotak logam yang serupa yang digunakan untuk melindungi kamera, diikat pada ikan keli yang besar dalam air sungai dan ikan yu kecil dalam air laut. Diagram 3.1 Diagram 3.2 Rajah 3.1 Rajah 3.2 The metal box tied to the the small shark is more crumple. Kotak logam yang diikat pada ikan yu kecil adalah lebih kemek. Based on the information and observation ; Berdasarkan maklumat dan pemerhatian tersebut; (a) State one suitable inference, Nyatakan satu inferens yang sesuai.

[1 mark] [1 markah]

(b) State one suitable hypothesis Nyatakan satu hipotesis yang sesuai

[1 mark] [1 markah]

Camera Kamera

Metal box Kotak logam

Metal box Kotak logam

Camera Kamera

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(c ) With the use of apparatus such as a thistle funnel, measuring cylinder and other apparatus, describe one experiment to investigate the hypothesis stated in 3 (b). Dengan menggunakan radas seperti corong tisel, silinder penyukat dan radas lain,terangkan satu eksperimen untuk menyiasat hipotesis yang dinyatakan di 3(b). . In your description, state clearly the following : Dalam penerangan anda nyatakan dengan jelas perkara berikut (i) The aim of an experiment Tujuan eksperimen (ii) The variable in experiment Pembolehubah dalam eksperimen (iii) The list of apparatus and materials Senarai radas dan bahan (iv) The arrangement of the apparatus Susunan radas (v) The procedure of the experiment, which includes one method of controlling the manipulated variable and one method of measuring the responding variable

Prosedur eksperimen yang mesti termasuk satu kaedah mengawal pemboleh ubah dimanipulasikan dan satu kaedah mengukur pemboleh ubah bergerak balas.

(vi) The way to tabulate the data Cara menjadualkan data (vii) The way to analyse the data Cara menganalisis data


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4 Diagram 4.1 and 4.2 show a computer and a hand phone chargers are connected to power supply 240 V separately. The computer and the hand phone charger only need the voltage of 12V and 9V respectively. Rajah 4.1 dan 4.2 menunjukkan sebuah pengecas computer dan telefon mudah alih disambungkan kepada bekalan kuasa 240 V secara berasingan . pengecas computer dan telefon mudah alih itu masing-masing memerlukan voltan 12 V dan 9 V.

The step down transformer that is installed in the computer and the hand phone chargers decreased the voltage supplied from 240 V as output voltage of 12 V and 9 V respectively. The number of turn of the secondary coil for transformer in the computer is more than in the hand phone charger. Transformer menurun yang dipasang dalam pengecas komputer dan telefon itu menurunkan voltan bekalan kuasa 240V kepada voltan output 12 V dan 9 V. Bilangan lilitan gegelung sekunder pada transformer dalam komputer adalah lebih banyak berbanding dalam pengecas telefon. Based on the information and observation: Berdasarkan maklumat dan pemerhatian: (a) State one suitable inference Nyatakan satu inferens yang sesuai. [1 mark] [1 markah] (b) State one suitable hypothesis. Nyatakan satu hipotesis yang sesuai. [1 mark] [1 markah]

Power supply, 240V Bekalan kuasa 240V

to computer ke komputer

output 12V output 12V

output 9V output , 9V

Power supply, 240V Bekalan kuasa 240V

to handphone ke telefon bimbit

secondary coil gegelung sekunder

secondary coil gegelung sekunder



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(c) With the use of apparatus such as low a.c power supply, a.c voltmeter, soft iron core , insulated copper wire and other apparatus, describe one experiment to investigate the hypothesis stated in 4(b). Dengan menggunakan radas seperti bekalan kuasa arus ulangalik, voltmeter a.u, teras besi lembut, dawai kuprum tidak bertebat, dan radas lain, huraikan satu eksperimen untuk menyiasat hipotesis yang dinyatakan di 4(b). In your description, state clearly the following: Dalam penerangan anda, nyatakan dengan jelas perkara berikut: (i) The aim of the experiment Tujuan eksperimen (ii) The variables in the experiment Pembolehubah dalam eksperimen (iii) The list of apparatus and materials Senarai radas dan bahan (iv) The arrangement of the apparatus Susunan radas (v) The procedure used in the experiment. Describe how to control the manipulated variable and how to measure the responding variable Prosedur yang digunakan dalam eksperimen. Terangkan bagaimana mengawal pembolehubah dimanipulasi dan bagaimana mengukur pembolehubah bergerak balas. (vi) The way to tabulate the data Cara menjadualkan data ` (vii) The way to analyse the data Cara untuk menganalisis data


END OF QUESTION KERTAS SOALAN TAMAT

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PERCUBAAN SIJIL PELAJARAN MALAYSIA (NEGERI KELANTAN) SKEMA PAPER 2

SECTION A

Question Mark Scheme Sub Mark

Total Mark

1(a) mass 1 1 (b)(i) Diagram 1.3 1

2 b(ii) The smallest scale division is smaller // D1.2 reads until 0.1 kg, D1.3 reads until 10 g

1

(c) Do repeated readings and find the average value // eyes is perpendicular/in line with the scale of readings when taking measurements

1 1

TOTAL 4 M

2 (a) Transverse / Plane waves 1 1

(b) M1 Show the path is not bended when enter the shallow area and is bended away from the normal line when enter the deep area M2 Show the wavelength is decreased in shallow area and is equal in deep area

1

1 2

(c) = 1 2

4.5 m (answer with correct unit) 1

TOTAL 5 M 3 (a) A substance which has unstable nucleus and always decays

to be more stable by emitting radioactive radiation. 1 1

(b) Beta particle 1 1

(c)(i) The cardboard sheet is thicker. Kepingan kadbod itu lebih tebal.

1

2 (ii) Less number of beta particle can penetrate the thicker

cardboard 1

(d) M1 100 g 50 g 25 g 12.5 g

M2 // 3 years

1

1 2

TOTAL 6 M

√

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Total Mark

4 (a) Transistor npn 1 1 (b)(i) To switch on the secondary circuit 1

2 (ii) To limit the current flow 1

(c)

15006 2

22

+=

RRV

R2

1

= 750 Ω

1

2

(d)(i) Not lighted up

1 2

(ii) Resistance of LDR decreases, voltage at base/ V2 1 is small

TOTAL 7M 5(a) Quantity of matter 1 1 (b)(i) Diagram 5.2 > Diagram 5.1 // vice versa 1

3 (b)(ii) Diagram 5.2 > Diagram 5.1 / vice versa // y2 > y1 1 / vice versa

(b)(iii) same 1 (c)(i) Mass increases, extension increases (accept if using

symbol) 1

2 (c)(ii) Hooke’s law // F α x/y if elastic limit is not exceed 1 (d)(i) Decreases 1

2 (d)(ii) Spring is stiffer // total K is increases 1

TOTAL 8 M 6(a) Current produced due to the change/cutting of magnetic

flux // Current produced when there is a relative motion between the coil and magnet

1 1

(b)(i) Changes / Cutting of magnetic flux 1 1 (b)(ii)

1 1

(b)(iii) Lenz’s law 1 1 (c)(i) Diagram 6.2 > Diagram 6.1 // vice versa 1

2 (c)(ii) Diagram 6.2 > Diagram 6.1 // vice versa 1 (d)(i) Number of turns increases, deflection increases 1

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Total Mark

(d)(ii) Number of turns increases, magnitude of current flows increases 1

2

TOTAL 8M 7(a) Reflection 1 1 (b)(i)

M1 light from object is reflected M2 Observer sees image in a straight line

2 3

(b)(ii) Upright// same size// virtual 1 (c)(i) M1 n =

M2 1.49 // 1.5

2

(c)(ii) Total internal reflection // Reflect completely into the glass 1

(c)(iii)

1

(d)(i)

1

(d)(ii) Avoid multiple image // image is brighter// To allow total internal reflection occur

1

TOTAL 10 M

8 (a)(i) The degree of hotness of an object 1 1 (a)(ii) M1 1 x 103 1 (1.0 x 60) = 0.05 c (78 – 20)

2 M2 2.069 x 105 Jkg-1oC 1 -1

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Total Mark

(b) M1 0.05 (2.069 x 105 1 )(78 – θ) = 2.0 (4 200) (θ – 28) 2 M2 55.6o 1 C

(c)(i) M1 Polystyrene M2 Good heat insulator 2

6

(c)(ii) M1 Big M2 Do not easily absorbed heat from surrounding // Not easily hot // Not easily releases heat to the ice

2

(c)(iii) M1 Big M2 Prevent heat from outside to easily enter

2

(d) S 1 1

TOTAL 12 M

SECTION B 9 (a) Force per unit surface area 1 (b)(i) The cross sectional area of nozzle in Diagram 9.1 > 9.2 1

5

(b)(ii) The distance between two streams of water in 9.1 > 9.2 // x1 > x

1 2

(b)(iii) The bigger the cross sectional area the lower the speed of air // vice-versa

1

(b)(iv) The higher the air pressure between the two streams the longer the distance between two streams of water. // vice-versa

1

(b)(v) The higher the speed of air had blown, the lower the air pressure between the two streams of water.

1

(c) M1 Gas flow through a narrow nozzle at high speed 1

4

M2 Low pressure is created 1

M3 The higher atmospheric pressure draws air into the low pressure region through air hole

1

M4 Air mix with gas (undergoes complete combustion) 1 (d) Charateristic Explanation

Streamlined / aerodynamic shape

Reduce water resistance

Strong material Not easily breaks/damage // can withstand high pressure/force

Low rate of rusting Not easily rust

1,1

1,1

1,1

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Has ballast tank Increase and decrease the total weight of submarine

Nuclear energy Last longer // save cost

1,1

1,1

10 TOTAL 20 M

10 (a) The number of complete oscillations in 1 second 1 1 (b) M1 Amplitude of traces in Diagram 10.1 = Diagram 10.2

M2 Number of complete oscillation in Diagram 10.1 > Diagram 10.2 M3 Period in Diagram 10.1 < Diagram 10.2 M4 The higher the number of complete oscillations the shorter the period. M5 The shorter the period the higher the frequency // T =

5 5

(c) M1 (When someone speaks the) paper cone will vibrating (The vibrating paper cone will vibrate) the air molecules M2 When the paper cone moves to the right, it will produce a layer of compressed air M3 When the paper cone moves to the left, it will produce a layer of rarefaction air M4 The series of compressions and rarefactions (produces sound waves)

4

4

(d) Charateristic Explanation

Large diameter of parabolic disc

Receive more signals

The distance of signal receiver from the centre of parabolic disc is equal to the focal length of the parabolic disc.

To focus/converged the signal received

Microwave High frequency // high energy // short wave length // less diffracted

High position from the ground

The signal is not blocked.

Shining / smooth surface Able to reflect the signals efficiently.

1,1

1,1

1,1

1,1

1,1

10

TOTAL 20 M

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SECTION C 11(a)(i) A big force acting in a short time 1 (ii) • Place the pile driver at a certain height

• Release the steel pile onto the pile driver • Causes an impact on the pile driver in a short time • Produces high impulsive force on the pile driver

1 1 1 1

(b) Technique//Characteristics Explanation Continue to swing the racket after hitting the ball

Ball will move further // produce higher impulse

Short time of contact between the ball and racket

High impulsive force

High string tension

High impulsive force // ball move with high acceleration

Nylon

High durability // not easy to break // more elastic

Q Continue to swing the racket after hitting the ball, Short time of contact between the ball and racket , High string tension, Nylon

2

2

2

2

2

(c) (i) (ii) (iii)

1001000

= 0.1 kg

20 x 10= 2 x 10

-3 -2

s

F = t

m(v – u)

= 0.02

0.1 ( -50-40)

= - 450 N

1

1

1

1

1 TOTAL 20M

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12 (a) The rate of flow of charge 1

(b) (i) Parallel 1 (ii)

1

(iii) 1. Increases 2. The effective resistance of the circuit decreases.

1 1

(c)

Characteristics Explanation Low melting point easy to melts 4.2 A little bit higher than the current flow through

the iron ( 1000 / 240 = 4.16 A) Small diameter increase the resistance High resistivity increase the resistance R Low melting point, ampere value is 4.2 A,

Small diameter high resistivity of wire and High resistivity

2 2 2 2 2

(d) (i) I =

= 0.05 A

1 1

(ii) (12- 10) W // 2 W 1 (iii) Efficiency = %

= 83.3 %

1 1

TOTAL 20 M

END OF SCHEME..

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SULIT 1 2012

Hak milik MPSM, Kelantan SULIT PAPER 3/2012

PEPERIKSAAN PERCUBAAN KELANTAN SKEMA KERTAS 3

Question Mark Scheme Sub

Mark Total Mark

1(a)(i)

State the manipulated variable length of wire(conductor/resistor)// l panjang dawai ( konduktor, perintang) // l

1

1

(ii) State the responding variable potential difference// voltage// V beza keupayaan // voltan // V

1 1

(iii) State the fixed variable Diameter wire // thickness//size//temperature// type of conductor diameter dawai// ketebalan dawai// saiz dawai//suhu dawai // jenis dawai

1 1

(b) (i)

State all value of V All the value of V are correct ( 2 m ) 4 values of V are correct (1m)

l /cm V/V 20 40 60 80

100

0.9 1.8 2.7 3.6 4.5

All correct : 2M 4 values correct : 1M

2 2

(ii)

Calculate all value of V

l / cm V /V 20 40 60 80

100

0.9 1.8 2.7 3.6 4.5

1 1

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SULIT 2 2012


(c) (iii)

Tabulate the data

length , l / cm

potential difference,V/V

Resistance,R/Ω

20 40 60 80 100

0.9 1.8 2.7 3.6 4.5

0.9 1.8 2.7 3.6 4.5

– All topic or symbol, l , V and R are tabulated - All correct unit given for l, V, and R - Values of V are consistent. - Values of V are consistent.

4 4

(d) Draw a Graph – State the correct topic of axis Menyatakan tajuk yang betul pada paksi - State the correct unit Menyatakan unit yang betul - Using an even scale Menggunakan skala genap: ex: 1:2 , 1: 5 , 2 : 6 Plot the point correctly Plot titik dengan betul - All the point plotted correctly Semua titik di pkot dengan betul - 4 point polled correctly 4 titik di plot betul. - Draw a best fit straight line Lukis garis penyuaian terbaik - Use a graph more than 50 % graf diguna melebihi 50%

5

5

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SULIT 3 2012


Skor ( )

Mark 7

5 – 6 3 - 4

2 1 0

5 4 3 2 1 0

(e) State the correct relationship R is directly proportional to l. R berkadar terus dengan l . [ syarat - graf mesti lalu (0,0) – lain jawapan reject ] [ Note : Graf lurus tak lalu (0,0) tapi pelajar jawab, V increasing linearly to θ - Reject ]

1 1

TOTAL

16

2(a) (i)

State the changes of M correctly M increase M bertambah

1 1

(ii) M1 Show the extrapolation on the graph M2 State the value and unit correctly 10 cm

1

1

2

b(i) M1 Draw a big triangle on the graph ≥ 8 cm x 8 cm M2 Correct substitute

)04()1050(

−−

M3 Correct answer with correct unit 10 cm

1

1

1

3

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SULIT 4 2012


(b)(ii) M1 Correct answer and unit = 1/ 0.1 = 10 D

1

1

c(i) M1 Draw a line on graph M2 State the answer 38.5 cm // 0.385 m

1

1

2

(c)(ii) M1 Correct substitute

3511

101

+=u

atau 2.5 = 35 / u

M2 Answer with correct unit u = 14.0 cm // 0.14 m

1

1

2

(d) Eyes is perpendicular to the scale of meter rule when taking measurements// Do the experiment in dark room// repeated readings of v for same u three time and find the average value as to increase the accuracy of the readings

1 1

3. (a)

State the correct Inference: The pressure in liquid depends on the density of liquid .

1 1

3(b) State the correct Hypothesis: When the density of liquid increases , the pressure also increases

1 1

3(c)(i)

State the aim of the experiment : To investigate the relationship between the density of the liquid and the pressure.

1

1

(ii) State the variables in the experiment: Manipulated variable: density Responding variable: pressure Fixed variable : depth.

1

1

2

(iii) List the apparatus and material Meter rule, manometer, meaasuring cylinder, water, salt, triple beam balance, thistle funnel, mercury

1 1

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SULIT 5 2012


(iv) Arrangement of apparatus

1 1

(vi) Procedure of experiment

State how to control the manipulated variable The measuring cylinder is filled with water of volume, V = 250 ml and mixed with salt of mass 10 g. Immersed the thistle funnel into the water at the depth of water, h = 30 cm . State how to measure the responding variable Measure the diffrence length of mercury column, y , at the manometer and record the data. Repeat the experiment Repeat the experiment with different mass of salt m = 20g , 30g, 40g and 50g.

1

1

1

3

Mercury Raksa

Rubber membrane Membran getah

Meter rule Pembaris meter

Rubber tube Tiub getah

Thistle funnel Corong tisel

Measuring cylinder Selinder penyukat

h

Manometer Manometer

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Tabulating data

mass,m /g Difference length of mercury column , y / cm

10 20 30 40 50

1

1

Analysing data Length, y /cm // Pressure m/g // density

1 1

TOTAL 12

4. Inference: The output voltage of the transformer depends on the number of turns of the secondary coil.

1 1

Hypothesis: The output voltage of the transformer increases as the number of turns of the secondary coil increases

1 1

Aim of the experiment : To investigate the relationship between the number of turns of the secondary coil and output voltage of a transformer.

1 1

Variables in the experiment: Manipulated variable: the number of turns of the secondary coil, N Responding variable: The output voltage, V Fixed variable: number of turns of the primary coil and the input voltage.

1

1

2

List of apparatus and materials: low a.c power voltage, insulated copper wire, iron-core, a.c voltmeter and connection wire.

1

1

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SULIT 7 2012


Arrangement of the apparatus:

1

1

Procedure: The number of turns of the primary coil Np

The number of turns of the secondary coil N = 150 turns.

s

The low voltage of a.c power supply is switched on. = 20 turns

The reading of the voltmeter is measured , V The experiment is repeated with Ns

(accept : step-down transformer)

= 40, 60, 80 and 100 turns

1

1 1

3

Tabulating data Number of turn of secondary coil, N

Output voltage, V / V

20 40 60 80 100

1

1

Analysing data OR stated : draw a graph V against N

1

1

TOTAL

12

V (V)

N

END OF SCHEME..

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phy k2,3 trial spm 2012 kelantan

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