fizik ting 4 akhir tahun.docx

8/11/2019 FIZIK TING 4 AKHIR TAHUN.docx

1/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

NO. KAD PENGENALAN

ANGKA GILIRAN

NAMA:................................................................. TINGKATAN:...........................

SEKOLAH MENENGAH KEBANGSAAN SYED SAFFI

SIMPANG EMPAT, PERLIS

PERIKSAAN PERCUBAAN SPM 2014 4531/2PHYSICS

Kertas 2

August 2014

jam Dua 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 yang

sepadan dalam bahasa Melayu.

3. Calon dibenarkan menjawab keseluruhan atau

sebahagian soalan sama ada dalam bahasaInggeris atau bahasa Melayu.

4. Calon dikehendaki membaca maklumat di halamanbelakang kertas soalan ini.

DISEDIAKAN OLEH DISEMAK DAN DISAHKAN OLEH

(PN ASLINDA BT BUYONG) (PN SITI NOR JAMALIAH BT MD RADZI)

KETUA PANITIA FIZIK KETUA JAB. SAINS&MATEMATIK

Untuk Kegunaan Pemeriksa

Bahagian SoalanMarkah

Penuh

Markah

Diperolehi

A

1 4

2 5

3 6

4 7

5 8

6 8

7 10

8 12

B9 20

10 20

C

11 20

12 20

Jumlah


2/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

2

_____________________________________________________________________________________

Kertas soalan ini mengandungi 30 halaman bercetak

The following information may be useful. The symbols have their usual meaning.Maklumat berikut mungkin berfaedah.Simbol yang digunakan membawa maksud yang biasa.

1. a=t

uv 14. n=

r

i

sin

sin

2. v2= u

2+ 2as 15. n=

csin

1

3. s= ut+ 2

2

1at 17.

vuf

111

4. Momentum = mv 18. v= f

5. F= ma 19. =D

ax

6. Kinetic energy =2

1mv

220. f=

T

1

7. Potential energy = mgh 21. V = IR

8. Elastic potential energy =2

1Fx 22. E = IR + Ir

9. =V

m 23. E = mc

2

10. Pressure,P= hg 24. P = VI

11. Pressure,P=

A

F 25. g = 10 m s

2

12. Heat, Q= mc 26. e = 1.61019

C

13. T

PVconstant


3/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

3

Section A[60 marks][60 markah]

Answer all questions in this section.

Jawab semuasoalan dalam bahagian ini.

1 Diagram 1.1 shows a reading from an electrical measurement instrument when it is not connected to

any circuit.

Diagram 1.2 shows the reading of the instrument it is connected to measure the current flowingthrough a circuit.

Rajah 1.1 menunjukkan bacaan pada satu alat pengukuran elekrik apabila tidak disambung pada

sebarang litar.Rajah 1.2 menunjukkan bacaan pada alat itu apabila disambung untuk mengukur arus yang

mengalir dalam sebuah litar.

Diagram 1.1 /Rajah1.1 Diagram1.2 /Rajah1.2

(a) Name the measuring instrument.

Namakan alat pengukur tersebut

[1mark / 1 markah]

(b) What is the error of reading shown by the instrument in Diagram 1.1Berapakah ralat bacaan yang ditunjukkan oleh alat dalam Rajah 1.1

[1mark / 1 markah]

(c) What is the actual electric current that flows through the circuit.Berapakah arus elektrik sebenar yang mengalir melalui litar.


4/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

4

[2 marks / 2markah]

2 Diagram 2 shows a boy of mass 70 kg cycling up a hill from P. The boy takes a rest for a while at Qbefore continue to R.

Rajah 2 menunjukkan seorang budak lelaki berjisim 70 kg berbasikal menaiki sebuah bukit

daripada P. Budak itu berehat seketika di Q sebelum meneruskan ke R.

Diagram 2 /Rajah 2

(a) State the type of energy of the boy at Q.Nyatakan jenis tenaga budak itu pada Q.

.

[1 mark / 1 markah]

(b) (i) State the change of energy of the boy when he is cycling down from Q to R.

Nyatakan perubahan tenaga budak itu apabila dia berbasikal turun dariQ ke R.

[1 mark / 1 markah]

(ii) Calculate the velocity of the boy at R.

Hitung halaju budak itu di R.

[2 marks / 2 markah]

(c) Name the physics concept involved


5/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

5

Namakan konsep fizik yang terlibat

.

[1 mark / 1 markah]

3 Diagram 3.1 shows a transistor amplifier circuit.Rajah 3.1 menunjukkan satu litar penguat transistor.

Diagram 3.1 /Rajah 3.1

(a) Based on Diagram 3.1, state

Berdasarkan Rajah 3.1, nyatakan(i) the function of microphone.

fungsi mikrofon.

....

[1 mark / 1 markah]

(ii) the terminal of dry cells at point Q

terminal sel kering pada titik Q

....

[1 mark / 1 markah]

(b) Calculate the potential difference across YZ.

Hitung beza keupayaan antara YZ.


6/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

6


(c) Two cathode ray oscilloscopes (C.R.O) are connected between points RS and points YZ inDiagram 3.1. A person speaks through the microphone and the time base of the C.R.O is

switched on.

Dua osiloskop sinar katod (O.S.K) disambung antara titik RS dan titik YZ dalam Rajah3.1.Seseorang bercakap melalui mikrofon dan dasar masa pada O.S.K dihidupkan.

Diagram 3.2 /Rajah 3.2

(a) Between points RS (b) Between points YZ

Antara titik RS Antara titik YZ

On Diagram 3.2, draw the signals displayed on the screen of the C.R.O between the pointsRS and points YZ.

Pada Rajah 3,2, lukiskan isyarat yang dipaparkan pada skrin O.S.K itu antara titik RS dantitik YZ



7/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

7

4 Diagram 4 shows a woman pull a box with aforce 800 N on a horizontal surface. The force acts atan angle 37

0from horizontal. The box moves a distance 4.5 m.

[The frictional force between the box and the horizontal surface is neglected]

Rajah 4 menunjukkan seorang perempuan menarik sebuah kotak dengan daya 800 N pada suatupermukaan mengufuk.Daya tersebut bertindak pada sudut 37 dengan permukaan mengufuk.Kotak

tersebut bergerak sejauh 4.5 m.

[Daya geseran antara kotak dengan permukaam mengufuk diabaikan]

Diagram 4 /Rajah 4

(a) What is the meaning of force?

Apakah yang dimaksudkan dengan daya?

[1 mark / 1 markah]

(b) Calculate:Hitungkan:

(i) the force that caused the box moves forward.

daya yang menyebabkan kotak itu bergerak ke hadapan.


8/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

8


(ii) the work done by the woman to move the box.kerja yang dilakukan oleh perempuan itu untuk menggerakkan kotak tersebut.


(c) What happens to the work done by the woman when the same force is applied but the angle

of the force from horizontal is reduced?Explain.

Apakah yang terjadi kepada kerja yang dilakukan oleh perempuan itu apabila daya yang

sama dikenakan tetapi sudut daya dengan garis mengufuk dikurangkan?Jelaskan

..

..[2 marks / 2 markah]


9/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

9

5 Diagram 5.1 and Diagram 5.2 show two identical containers filled with water at a different depth.When the tap is opened, water spurts out at different horizontal distance due to the pressure exerted

on the wall of the container.

Rajah 5.1 dan Rajah 5.2 menunjukkan dua bekas yang serupa berisi air pada kedalamanberbeza.Apabila pili dibuka, air memancut keluar pada jarak ufuk yang berlainan disebabkan oleh

tekanan yang dikenakan ke atas dinding bekas itu.

Diagram 5.1 /Rajah5.1 Diagram5.2 /Rajah5.2

(a) What is the meaning of pressure?

Apakah yang dimaksudkan dengan tekanan?

[1 mark / 1 markah]

(b) Observe Diagram 5.1 and Diagram 5.2.

Perhatikan Rajah 5.1 dan Rajah 5.2(i) Compare the depth of the tap from the surface of the water.

Bandingkan kedalaman pili dari permukaan air.

[1 mark / 1 markah]

(ii) Compare the horizontal distance of the water spurting out.

Bandingkan jarak ufuk pancutan air.


10/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

10

[1 mark / 1 markah]

(iii) Relate the horizontal distance of the water spurting out to the pressure of water at thetap.Hubungkaitkan jarak ufuk pancutan air dengan tekanan air pada pili.

[1 mark / 1 markah]

(iv) Relate the pressure in the water to the depth of the water.

Hubungkaitkan tekanan air dengan kedalaman air.

[1 mark / 1 markah]

(c) (i) What happens to the horizontal distance of the water spurting out in Diagram 5.2

when the lid of the container is opened?

Apakah yang berlaku kepada jarak ufuk pancutan air dalam Rajah 5.2 jika penutupbekas itu dibuka?

[1 mark / 1 markah]

(ii) Explain the answer in 5(c)(i).

Terangkan jawapan di5 (c)(i).

[2 marks / 2markah]


11/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

11

6 Diagram 6.1 shows an electromagnet is made using an iron nail, wire coils and dry cells. Thecertain numbers of pins are attracted to the electromagnet.

Diagram 6.2 shows the electromagnet using the different number of dry cells.

Rajah 6.1 menunjukkan satu elektromagnet yang dibuat dengan menggunakan sebatang paku besi,gegelung dawai dan sel kering. Beberapa pin ditarik oleh elektromagnet tersebut.

Rajah 6.2 menunjukkan elektromagnet tersebut menggunakan bilangan sel kering yang berbeza.

Diagram 6.1 /Rajah6.1


(a) What is the meaning of electromagnet?

Apakah yang dimaksudkan dengan elektromagnet?


12/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

12

[ 1 mark / 1 markah]

(b) Using Diagram 6.1 and Diagram 6.2 ,Menggunakan Rajah 6.1 dan Rajah 6.2 ,

(i) compare the number of dry cells.

bandingkan bilangan sel kering.

..

[1 mark / 1 markah]

(ii) compare the magnitude of current.bandingkan kekuatan arus.

..

[1 mark / 1 markah]

(iii) compare the number of pins attracted by the electromagnet.

bandingkan bilangan pin yang ditarik oleh elektromagnet.

..

[1 mark / 1 markah]

(iv) compare the strength of electromagnet.

bandingkan kekuatan elektromagnet.

..[1 mark / 1 markah]

(c) State the relationship between the answers in (b)(ii) and (b)(iv) .

Nyatakan hubungan antara jawapan di (b)(ii) dan (b)(iv).

....

[1 mark / 1 markah]

(d) On Diagram 6.1 draw the magnetic fields lines around the iron nails.Pada Rajah 6.1 lukiskan garisan-garisan medan di sekeliling paku besi itu.



13/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

13

7 Diagram 7.1 shows a path of light ray AO travel from air to a glass block

Rajah 7.1 menunjukkan lintasan satu cahaya AO bergerak dan udara ke satu bongkah kaca.

[critical angle = 42 :sudut genting= 42]


(a) What is the meaning of critical angle?Apakah yang dimaksudkan dengan sudut genting?

................................................................................................................

[1 mark / 1 markah]

(b) On Diagram 7.1, start from O, draw the path of the light ray passing through the glass blockand then through the air again.

Pada Rajah 7.1, bermula dari O, lukiskan lintasan cahaya semasa melalui bongkah kaea

dan kemudiannya melalui udara semula.



14/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

14

(c) (i) Calculate the refractive index of the glass block.

Hltung indek biasan bongkah kaca


(ii) What happen to the refractive index when the glass block is replaced with a mediumof higher density?

Apakah yang terjadi kepada indek biasan apabila bongkah kaca digantikan dengan

medium yang ketumpatan lebih tinggi?

........................................................................................................................[1 mark / 1 markah]

(d) Diagram 7.2 shows the plane mirrors are used in a construction of a periscope.

Rajah 7.2 menunjukkan cermin satah digunakan dalam pembinaan sebuah periskop.



15/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

15

The image produced by the mirror periscope is not sharp.The glass block in Diagram 7.1 is cut to make two glass prisms and is used to replace the plane

mirrors in the periscope.

Suggest the characteristics of the glass prisms that can be made to produce a sharper image throughthese aspects:

Imej yang dihasilkan oleh periskop cermin adalah tidak tajam.

Bongkah kaca dalam Rajah 7.1 dipotong menjadi dua prisma kaca dan diguna untuk menggantikancermin satah dalam periskop itu,

Cadangkan pengubahsuaian yang boleh dilakukan untuk menghasilkan imej yang lebih tajam

melalui aspek-aspek berikut.

(i) the angles of the prisms.

sudut-sudut dalam prisma kaca itu.

................... ................................................................................................. ..............................

Reason

Sebab

................... ................................................................................................. ..............................


(ii) the arrangements of the prisms

susunan prisma kaca

................... ................................................................................................. ..............................

ReasonSebab

................... ................................................................................................. ..............................



16/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

16

8 Diagram 8.1 and Diagram 8.2 show two arrangements of the apparatus to determine the specific

heat capacity of aluminium block.

Rajah 8.1 dan Rajah 8.2 menunjukkan dua susunan radas untuk menentukan muatan haba tentubagi bongkah aluminium.



(a) What is the meaning of specific heat capacity?Apakah maksud muatan haba tentu?

[1 mark

/ 1 markah]


17/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

17

(b) Based on Diagram 8.1 and Diagram 8.2, state the suitable characteristics of the arrangementof the apparatus to determine the specific heat capacity of aluminium block.

Berdasarkan Rajah 8.1 dan Rajah 8.2, nyatakan ciri-ciri yang sesuai bagi susunan radas

untuk menentukan muatan haba tentu bagi blok aluminium.

Give reason for the suitability of the characteristics.

Berikan sebab untuk kesesuaian ciri-ciri itu.

(i) The type of plate to be used as the base.

Jenis plat yang digunakan sebagai tapak.

Reason

Sebab

.


(ii) The type of liquid poured in the hole

Jenis cecair yang dituang ke dalam lubang.

Reason

Sebab


(iii) Material used to wrap the aluminium block.Bahan yang digunakan untuk membalut blok aluminium.

.

Reason

Sebab

. [2 marks / 2 markah]


18/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

18

(c) The aluminium blocks in both diagrams have 1 kg mass and being heated by using the

electric heater of power 200 W within 4 minutes. The increasing of temperature in Diagram8.1 is 30

0C whereas in Diagram 8.2 is 50

0C.

Blok aluminium dalam kedua-dua rajah berjisim 1 kg dan dipanaskan dengan menggunakan

pemanas elektrik berkuasa 200 W selama 4 minit.Peningkatan suhu dalam Rajah 8.1 ialah300C manakala dalam Rajah 8.2 ialah 50

0C.

Calculate the specific heat capacity of the aluminium blocks in:

Hitungkan muatan haba tentu bagi blok aluminium dalam:

(i) Diagram 8.1.

Rajah8.1


(ii) Diagram 8.2.Rajah8.2


(iii) Determine the most suitable apparatus that can give an accurate result to

determine the specific heat capacity of the aluminium block.

Tentukan radas yang paling sesuai yang boleh memberi keputusan yang lebih

tepat untuk menentukan muatan haba tentu blok aluminium.

..

[1 mark / 1 markah]


19/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

19

Section B

Bahagian B

[ 20marks]

[20 markah]

Answer any one question from this sectionJawab mana-mana satusoalan dari bahagian ini.

9 Diagram 9.1 shows a boy of mass 60 kg standing in a stationary boat of mass 50 kg.Diagram 9.2 shows the boat move away from the jetty with velocity of 6 m s

1when the boy

jumped to the jetty with velocity of 5 m s1

.

Rajah 9.1 menunjukkan seorang budak lelaki berjisim 60 kg berdiri di dalam sebuah bot pegun

yang berjisim 50 kg.Rajah 9.2 menunjukkan bot itu bergerak menjauhi jeti dengan halaju 6 m s

1apabila budak lelaki

itu melompat ke jeti dengan halaju 5 m s1

.

Diagram 9.1 /Rajah 9.1 Diagram 9.2 /Rajah9.2

(a) (i) What is the meaning of momentum?

Apakah maksud dengan momentum?[1 mark / 1 markah]

(ii) What is the total momentum of the boy and the boat in Diagram 9.1?Using Diagram 9.2, calculate the total momentum of the boy and the boat after the

boy jumped to the jetty.

Using Diagram 9.1 and Diagram 9.2, compare the total momentum before and after

the boy jumped to the jetty.Name the physics principle involved in the above situations.

Berapakah jumlah momentum budak lelaki dan perahu dalam Rajah 9.1?

Menggunakan Rajah 9.2, hitungkan jumlah momentum budak lelaki dan perahuselepas budak itu melompat ke jeti.

Menggunakan Rajah 9.1 dan Rajah 9.2, bandingkan jumlah momentum sebelum dan

selepas budak lelaki itu melompat ke jeti.Namakan prinsip fizik yang terlibat dalam situasi di atas.



20/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

20

(b) Describe, in terms of momentum, the propulsion of a rocket engine.

Terangkan, dalam sebutan momentum, rejangan sebuah enjin roket.


(c) Diagram 9.3 shows a rocket.Rajah 9.3 menunjukkan roket.


You are required to give some suggestions to design a rocket which can travel in the outer

space with higher acceleration.

Using the knowledge on forces and motion and the properties of materials, explain thesuggestions based on the following aspects :

Anda dikehendaki memberi beberapa cadangan untuk mereka bentuk sebuah roket yang

dapat bergerak ke angkasa lepas dengan pecutan yang tinggi.

Menggunakan pengetahuan tentang gerakan, daya dan sifat-sifat bahan terangkan

cadangan itu yang merangkumi aspek-aspek berikut :(i) the shape of the rocket

bentuk roket

(ii) the material used to build the rocket

bahan yang digunakan untuk membuat roket

(iii) additional supply needed that enable the rocket to move in outer spacebekalan tambahan yang diperlukan untuk membolehkan roket bergerak di angkasa

lepas(iv) size of the combustion chamber

saiz ruang pembakaran

(v) the structure of the rocketstruktur binaan roket [10 marks / 10 markah]


21/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

21

10 (a) Diagram 10.1 shows the side view of two water tanks. When the motors on the

wooden dippers are switched on, the wooden dippers oscillate on the surface of the waterand produce water waves.

Rajah 10.1 menunjukkan pandangan sisi bagi dua buah tangki air. Apabila motor pada

pencelup kayu dihidupkan, pencelup kayu itu bergetar pada permukaan air danmenghasilkan gelombang air.


Diagram 10.2 shows the aerial view of the propagation of the waves into region Pand Q.

Rajah 10.2 menunjukkan pandangan atas bagi perambatan gelombang itu ke kawasan Pdan Q.



22/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

22

(i) What is the meaning of wavelength?

Apakah maksudpanjang gelombang?

[1 mark / 1 markah]

(ii) Based on Diagram 10.1 and Diagram 10.2:

Berdasarkan Rajah 10.1 dan Rajah 10.2:

compare the wavelength of the waves in region P and region Q

compare the change of speed of the waves in region P and region Q

compare the depth of water region P and region Q

compare the angle of deviation when the waves move into region P and into region Q

bandingkan panjang gelombang bagi gelombang dalam kawasan P dan kawasan Q

bandingkan perubahan laju gelombang dalam kawasan P dan kawasan Qbandingkan kedalaman air dalam kawasan P dan kawasan Q

bandingkan sudut sisihan apabila gelombang bergerak ke dalam kawasan P dan ke

dalam kawasan Q

Relate the change of speed of wave to the angle of deviation.

Hubungkaitkan perubahan laju gelombang kepada sudut sisihan.


(b) Sound is produced by a vibrating object in a medium and propagates as a longitudinal wave

in the medium.Bunyi dihasilkan oleh suatu objek yang bergetar di dalam suatu medium dan merambat

sebagai gelombang membujur dalam medium itu:

(i) Explain how a tuning fork produces sound waves in air.

Terangkan bagaimana sebuah tala bunyi menghasilkan gelombang bunyi dalam

udara.[2 marks/ 2 markah]

(ii) Describe how you would show that sound waves are longitudinal waves.

Terangkan bagaimana anda akan menunjukkan bahawa gelombang bunyi adalahgelombang membujur.



23/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

23

(c) Diagram 10.3 shows the use of a type of wave to obtain an image of a foetus. A transducertransmits the waves into the womb. The transducer is moved on a layer of get applied on the

skin of the mother. The rebounding echoes of the waves are detected to form a picture of the

foetus on a computer monitor.Rajah 10.3 menunjukkan penggunaan suatu jenis gelombang untuk memperoleh imej bagifetus.Sebuah transduser memancar gelombang itu ke dalam rahim.Transduser itu

digerakkan di atas satu lapisan gel yang disapu pada kulit ibu.Gema bagi gelombang yang

melantun balik dikesan untuk membentuk gambar fetus itu pada paparan komputer.

Diagram 10.3 /Rajah10,3

(i) Using appropriate physics concepts, explain how a clearer image of the foetus can be

obtained.

Your answer should include the following aspects:

o the type of wave

o

the frequency of the waveo the amplitude of the wave

o the use of the layer of gel

Dengan menggunakan konsep fizik yang sesuai, terangkan bagaimana satu imej yang

lebih jelas bagi fetus itu dapat diperolehi.Jawapan anda harus meliputi aspek berikut:

o jenis gelombang

o frekuensi gelombang

o amplitud gelombang

o penggunaan lapisan gel

[8 marks/8 markah]

(ii) Name the phenomenon of wave being applied in 10(c)(i).

Namakan fenomena gelombang yang digunakan di10(c)(i).

[1 mark/ 1 markah]

(iii) State one other use of the wave.

Nyatakan satu lagi penggunaan bagi gelombang itu.[1 mark / 1 markah]


24/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

24

Section C

Bahagian C

[20 marks]

[20 markah]

Answer any one question from this sectionJawab mana-mana satusoalan daripada bahagian ini.

11 Diagram 11.1 shows a small aircraft.

Diagram 11.2 shows a cross section of the aircrafts wings.Rajah 11.1 menunjukkan kapal terbang kecil.

Rajah 11.2 menunjukkan keratan rentas sayap kapal terbang tersebut.

Diagram 11.1 /Rajah11.1 Diagram 11.2 /Rajah11.2

(a) Name the shape of the cross section of the aircraft wings.

Namakan bentuk keratan rentas bagi sayap kappal terbang [1 mark / 1 markah]

(b) (i) The aircraft is lifted when flying due to a difference pressure of the air between theupper and bottom sides of the wings.

Kapalterbang itu terangkat semasa terbang disebabkan adanya perbezaan tekanan

udara di antara bahagian atas dan bawah sayapnya.

Explain how this difference in pressure is produced.

Terangkan bagaimana perbezaan tekanan ini terhasil


(ii) Name the principle involved in your answer in (b)(i).

Namakan prinsip yang terlibat dalam jawapan anda untuk(b)(i).

[1 mark / 1 markah]


25/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

25

(c) Table 11.1 shows the characteristic of four designs of the aircraft wings.

Jadual 11.1 menunjukkan ciri-ciri bagi empat rekabentuk bagi sayap kapal terbang.

Table 11.1 /Jadual11.1

You are requested to choose a suitable wing to be installed with the body of the aircraft.

Anda dikehendaki memilih sayap yang sesuai untuk dipasang bersama badan kapalterbang

By referring to the information given in Table 11.1, explain the suitability of each

characteristic and suggest the most suitable wing to be installed with the body of the

aircraft.Dengan merujuk kepada maklumat yang diberikan dalam Jadual 11.1, terangkan

kesesuaian setiap ciri dan cadangkan sayap yang paling sesuai untuk dipasang bersama

badan kapal terbang tersebut.[10 marks / 10 markah]

Design

Rekabentuk

Shape of cross section of wing

Bentuk keratan rentas sayap

Area of wing

Keluasan

sayap

[m2]

Density of wing

material

Ketumpatan

bahan sayap

[kg m3]

Difference in

speed of air

above and belowthe wing

Perbezaan laju

udara diantara

bahagian atas

dan bawah sayap

[m s1]

P 40.0 2100 10.0

Q

41.5 23000.0

R

42.5 2000 0.0

S38.2 2050 8.0


26/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

26

(d) An aircraft installation department chooses wing P to be installed with its aircrafts which has

maximum mass 800 kg.

Sebuah syarikat pemasangan kapal terbang memlih sayap P untuk dipasang padapesawatnya yang berjisim maksimum 800 kg.

(i) The different pressure between below and above the wing is 500 N m2

.Calculate the lift force exerted to the wing.

Beza tekanan udara antara bawah sayap di atasnya ialah 500 N m2

.

Kirakan daya angkat yang bertindak pada sayap.[2 marks / 2 markah]

(ii) Determine the resultant force and its direction that exerted to the wing of the

aircraft.Tentukan daya paduan dan arahnya yang bertindak terhadap sayap kapal terbang

tersebut.



27/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

27

12 The radioisotope which have a different half-life are used in industries and medical to solve theproblems.

The table 12.1 below shows characteristic of radioisotope D, E, F, G and H.

Radioisotop yang mempunyai setengah hayat yang berbeza telah digunakan dalam bidangperindustrian dan perubatan untuk menyelesaikan sesuatu masalah.

Jadual 12.1 di bawah menunjukkan ciri-ciri radioisotop D, E, F,G dan H.

RadioisotopeRadioisotop

State ofmatter

Keadaan

jirim

Types ofray

Jenis sinar

Half liveSetengah

hayat

The power of penetringKuasa penembusan

D SolidPepejal 140days140 hari Stopped by 5 mm aluminiumDihentikan oleh 5 mm aluminium

ESolid

Pepejal

5 years

5 tahun

Almost stopped by 3cm plumbum

Hampir-hampir diberhentikan oleh

3cm plumbum

FGas

Gas

5 days

5 hari

Almost stopped by 3cm plumbum

Hampir-hampir dihentikan oleh 3cm

plumbum

GLiquidCecair

12years12 tahun

Stopped by 5 mm aluminium

Dihentikan oleh 5mm aluminium

HSolid

Pepejal

28 years28 tahun

Stopped by a sheet of paper

Dihentikan oleh sekeping kertas

Table 12.1 /Jadual12.1

(a) What is the meaning of radioisotope?

Apakah yang dimaksudkan dengan radioisotop?

[1 mark / 1 markah]


28/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

28

(b)Pa

234

91 take time 20.8 hours for decay from 80g to 5g.

Pa234

91 mengambil masa 20.8 jam untuk menyusut dari 80g ke 5g.

(i) What is the half life?

Berapakah setengah hayatnya

(ii) What is the mass decays after 26 hours?

Berapakah jisim yang mereput setelah 26 jam?[4 marks / 4markah]

(c) A company produces rolled papers. Automatic controlled system as shown in Diagram 12.2

has been used to ensure the paper being released systematically by the compression wheel.Sebuah kilang mengeluarkan kertas secara bergulung-gulung.Sistem kawalan automatik

seperti yang ditunjukkan dalam Rajah 12.2 di bawah telah digunakan untuk memastikan

kertas yang dikeluarkan daripada roda memampat adalah seragam.


Compression wheel

Roda memampat

Radioactice sources

Sumber radioaktif Rotating wheel

Roda berputar

Detector

Alat pengesanCounter

Alat pembilang

Paper

kertas


29/37


30/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

30

INFORMATION FOR CANDIDATES

MAKLUMAT UNTUK CALON

1. This question paper consists of threesections: Section A, Section Band Section C.

Kertas soalan ini mengandungi tigabahagian: Bahagian A, Bahagian Bdan Bahagian C.

2. Answer allquestions in Section A. Write your answers for Section Ain the spaces provided in this

question paper.

Jawab semuasoalan dalam Bahagian A . Jawapan anda bagi Bahagian A hendaklah ditulis padaruang yang disediakan dalam kertas soalan ini.

3. Answer onequestion from Section Band onequestion from Section C. Write your answers for

Section Band Section Con spaces for answers provided.Jawab satusoalan daripada Bahagian Bdan satusoalan daripada Bahagian C.

Tulis jawapan bagi Bahagian Bdan Bahagian Cpada ruang untuk jawapan yang disediakan.

4. Show your working, it may help you to get marks.

Tunjukkan kerja mengira, ini membantu anda mendapatkan markah.

5. If you wish to change your answer, cross out the answer that you have done. Then write down thenew answer.

Jika anda hendak menukar jawapan, batalkan jawapan yang telah dibuat.Kemudian tulis jawapan

yang baru.

6. The diagrams in the questions are not drawn to scale unless stated.

Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.

7. A list of formulae is provided on page 2.

Satu senarai formula disediakan di halaman 2.

8. The marks allocated for each question or part of a question are shown in brackets.

Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan.

9. You are advised to spend 90 minutes to answer questions in Section A, 30 minutes for

Section Band 30 minutes forSection C.

Anda dinasihati supaya mengambil masa 90 minit untuk menjawab soalan dalam Bahagian A, 30

minit untuk Bahagian Bdan 30 minit untuk Bahagian C.

10. You may use a scientific calculator.

Anda dibenarkan menggunakan kalkulator saintifik.


31/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

31

PEPERIKSAAN PERCUBAAN

2014

MARKING SCHEME FOR PHYSICS PAPER 2

BAHAGIAN A

No Answer Mark1. (a) Ammeter 1

(b) + 2A 1

(c) 14 - (+2)

= 12A

1

1

Total 4

2. (a) Gravitational Potential Energy 1

(b) (i) Gravitational Potential Energy ---> Kinetic Energy 1

(ii) mgh=1/2mv(10)(50) = 1/2V

2

V = 31.6 m s-1

1

1

(c) Principle of conservation of energy 1

Total 5

3. (a) (i) To convert sound into electrical signals 1

(ii) Negative 1

(b) 1

1(c) 1

1

Total 6

4. (a) Force is mass time acceleration 1

(b) (i) F = f cos

= 800 cos 37o

= 800 x 0.7986= 638.9 N

1

1

(ii) W = fs cos

= 800(4.5) cos 37o

1


32/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

32

= 2875.1 N m-

/J 1

(c) -Work increase

-because friction increase

1

1

Total 75. (a) Pressure is force per unit area// Pressure = Force/ area 1

(b) (i) Diagram 5.2 > Diagram 5.1 // vice versa 1(ii) Diagram 5.2 > Diagram 5.1 // vice versa 1

(iii) Pressure increases, horizontal distance increases 1

(iv) Depth increases, pressure increases 1

(c)

(i)Increases

1

M1 - Atmospheric pressure exerted at the surface of water 1

M2 - Increases the water pressure 1

Total 8

6. (a) (i) Magnetism / magnetic field produced by current 1

(b) (i) The number of dry cells in 6.2 > 6.1 1

(ii) The size of current in 6.2 > 6.1 1(iii) The number of pins is attracted by the electromagnet in6.2 > 6.1 1

The strength of electromagnet in 6.2 > 6.1 1As the current increases the strength of electromagnet increases 1Draw the correct pattern

Mark the correct direction

11

Total 8

7 (a) Image that cannot be formed on screen

(b) 2

(c) 1. Upright

2. Same size3. Laterally inverted ( any two)

2

(d) Distance between candle and image = 2 + 2= 4 m

1

(e) (i) Prism 1


33/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

33

BAHAGIAN B

Avoid multiple image // not affected by weather // less

likely to be damaged // are the light are totally reflected

1

(ii) One prism is on the top and other one is at the bottom //

diagram

Produce total internal reflection

1

1Total 10

8. (a) The quantity of heat required to increase the temperature of

I kg of substance by 10C.

1

(b) (i) Type of plate :Polystyrene

Reason: Avoid heat loss to surrounding

1

1

(ii) Type of liquid : oil

Reason: to produce good thermal contact between

Aluminium block and thermometer.

1

1

(iii) Material used to wrap the Aluminium block : felt clothReason: Avoid heat loss to surrounding

1

1(c) (i) Diagram 8.1:

P x t = m x c x

c = P x t

m x c = 200 x 240

1 x 30

= 1600 J kg-1

0C

-1

1

1

(ii) Diagram 8.2:

P x t = m x c x

c = P x t

m x c = 200 x 240

1 x 50= 960 J kg

-10C

-1

1

1

(d) Diagram 8.2 1

Total 12

9 (a) (i) Product of mass and velocity / / momentum = mass x velocity 1

(ii) - Total momentum in Diagram 9.1 is zero- Magnitude of the momentum of the boy and the boat are equal- Direction of the momentum of the boy and the boat are opposite

- Total of the momentum of the boy and the boat before and afterthe boy jumped are equal- Total momentum of the boy and the boat before and after the

boy jumped are equal- Total momentum before and after collision are equal

1

1

1

1

11

(b) - Liquid oxygen and liquid hydrogen fuel is burned in the 1


34/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

34

combustion

- The exhaust gas is ejected out of the rocket at high speed.- Produced large momentum backward.- The rocket gained a large momentum forward.

1

1

1

(c) Design ReasonsAerodynamic shape Decreases air resistance

Low density material //

Strong materialLighter // Does not break easily

Has liquid oxygen Boosting/support combustion

Increase the size of

combustion chamberMore space for the fuel to be burnt

Has several stages that

can slip/strip offTo decrease mass

10

Total 20

10. (a) (i) - Distance between two consecutive creasts/trough 1

(ii) - Region P longer/vice versa

- Region P higher/vice versa- Region P is deeper/vice versa

- Region P smaller/vice versa

- The smaller the change in speed, the smaller the angle ofdeviation/vice versa

1

11

1

1

(b) (i) - When the prongs of the tuning fork move outward, itproduce a

region of compression

- When the prongs of the tuning fork move inward, itproduce a

region of rarefaction

-

1

1

(ii) - Candle flame in front of a loud speaker that emits sound

wave

- Candle flame vibrates forward and backward

1

1

(ii)

2


35/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

35

BAHAGIAN C

Suggestion Reason

1. Ultrasound Safer/no side effect to thefoetus// can differentiate

between layers of different

soft tissues2. high frequency can penetrate into mothers

womb to scan the foetus /does not diffract easily

3.- small amplitude /

- high amplitude

- does not harm the foetus /

- to produce clearer image

4. gel layer - Allow the transducer to

move easily on the skin//- Reduce frictional

force//produce better soundcontact between

2

2

2

(ii) - reflection 1

(iii) - determine the depth of the sea

- locate the position of a shoal of fish

1

1

Total 20

11. (a) Aerofoil 1

(b) (i) -The shape of cross section of the wing causes the speed ofairflow above the wings to be higher than the speed of

airflow below.

-When the speed of moving air is higher the pressure islower.

- Hence air pressure below the wings is higher compare to

above the wings.

1

11

(ii) Bernoullis principle 1

(c) Characteristic Reason

1.A shape of cross section

which is upper side ishigher Than the

bottom//aerofoil

To produce the speed of

airflow above the wings tobe higher than the speed of

air below

2. Large area of the wing The larger the lift force

3. Low density of the wing

material

Less weight// produce more

upward force

2

2

2


36/37

SULIT 4531/2

[Lihat sebelah

4531/2 SULIT

36

4. The higher the difference

in speed of air

The higher the difference in

pressure

5. P was chosen Because shape of

aerofoil,large area of the

wing,Low density of the wing

and the higher the

difference in speed of air

2

2

(d) (i) F = P x A= 500 x 40

= 20000N

1

1

(ii) Resultant Force = 20 000800(10)= 12000 N

Direction of force : upwards

1

1

Total 20

12 (a) Unstable nucleus 1

(b) (i)

1

1

(ii)1

1

(c) Characteristic Reason

1. State of matter- solid Easy to handle

2. Types of ray- Can penetrate paper easily / Not toodangerous

3. Half live - long Can use last longer

4. The power ofpenetrating - high / stop 5

mm Al

Can penetrate paper easily

5. Choose d Because solid, , long, high

2

2

2

2

2


37/37

SULIT 4531/2

(d) Equestion:

Mass defect:235.043930 + 1.008665 ---> 140.920046 + 92.922042 +

2(1.008665)

m = 236.052595 - 235.859418

m = 0.193177 u

Change to kg:

m = 0.193177 (1.66 x10-27

)

m = 3.2067 x10-28

kg

Energy, E = mc2

=(3.2067 x 10-28

)( 3 x 10

8)2

= 8.3999 x-11

J

1

1

1

1

1

fizik ting 4 akhir tahun.docx

Documents