m confidential 8 4531/2 - physics is interesting · nyatakan satu faktor yang mempengaruhi kelajuan...

27
CONFIDENTIAL 8 4531/2 4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL 1.10 1.00 g cm -3 0.90 0.80 0.70 For Examiner’s use 3 Diagram 3.1 shows a freely floating hydrometer in water. Rajah 3.1 menunjukkan hidrometer yang terapung pegun di dalam air. Diagram 3.1 Rajah 3.1 A principle states that; Satu prinsip menyatakan bahawa; When a body is immersed wholly or partially in a fluid, the buoyant force acting on the body is equal to the weight of the fluid it displaces. Bila suatu objek yang direndamkan sepenuh atau sebahagiannya di dalam bendalir, daya tujah yang bertindak ke atas objek itu adalah sama dengan berat bendalir yang tersesar. 3(a)(i) (a) (i) Name the principle above. Namakan prinsip di atas. …………………………….................................................................... [1mark] / [1 markah] 3(a)(ii) (ii) Mark on Diagram 3.1 the direction of the two forces acting on the hydrometer. Tandakan dengan anak panah arah daya-daya yang bertindak ke atas hidrometer pada Rajah 3.1. [1mark] / [1 markah 1 1 Hydrometer Hidrometer Water Air g cm -3 Click to buy NOW! P D F - X C h a n g e V i e w e r w w w . d o c u - t ra c k . c o m Click to buy NOW! P D F - X C h a n g e V i e w e r w w w . d o c u - t ra c k . c o m Click to buy NOW! P D F - X C h a n g e V i e w e r w w w . d o c u - t ra c k . c o m Click to buy NOW! P D F - X C h a n g e V i e w e r w w w . d o c u - t ra c k . c o m Click to buy NOW! P D F - X C h a n g e V i e w e r w w w . d o c u - t ra c k . c o m Click to buy NOW! P D F - X C h a n g e V i e w e r w w w . d o c u - t ra c k . c o m

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Page 1: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 8 4531/2

4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

1.10

1.00

g cm -3

0.90

0.80

0.70

For Examiner’s use

3 Diagram 3.1 shows a freely floating hydrometer in water. Rajah 3.1 menunjukkan hidrometer yang terapung pegun di dalam air.

Diagram 3.1 Rajah 3.1

A principle states that; Satu prinsip menyatakan bahawa; When a body is immersed wholly or partially in a fluid, the buoyant force acting on the body is equal to the weight of the fluid it displaces.

Bila suatu objek yang direndamkan sepenuh atau sebahagiannya di dalam bendalir, daya tujah yang bertindak ke atas objek itu adalah sama dengan berat bendalir yang tersesar.

3(a)(i)

(a) (i) Name the principle above. Namakan prinsip di atas. ……………………………....................................................................

[1mark] / [1 markah]

3(a)(ii)

(ii) Mark on Diagram 3.1 the direction of the two forces acting on the hydrometer. Tandakan dengan anak panah arah daya-daya yang bertindak ke atas hidrometer pada Rajah 3.1.

[1mark] / [1 markah

1

1

Hydrometer Hidrometer

Water Air

g cm-3

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Page 2: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 4531/2

[Turn over 4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

9

(b) The hydrometer is removed from water, dried and then placed in oil.

Hidrometer itu dikeluarkan dari air, dikeringkan dan dimasukkan ke dalam minyak.

For Examiner’s use

(i) Predict the length of the hydrometer that is submerged in oil, compared to the length in water. Ramalkan panjang hidrometer yang tenggelam di dalam minyak, berbanding panjang di dalam air.

3(b)(i)

……………………………………………………………………………

[1mark] / [1 markah]

(ii) Give a reason for your answer in 3(b)(i). Nyatakan satu alasan untuk jawapan anda dalam 3(b)(i).

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

[1mark] / [1 markah]

3(b)(ii)

(c)

Diagram 3.2 Rajah 3.2

Diagram 3.2 shows an object which has a weight of 0.25 N fully immersed in water. Its apparent weight is 0.22 N. (Density of water = 1000 kg m-3) Rajah 3.2 menunjukkan satu objek yang mempunyai berat 0.25 N terendam sepenuhnya di dalam air.Berat ketara bahan itu ialah 0.22 N. (Ketumpatan air = 1000 kg m-3)

(i) What is the buoyant force on the object? Berapakah daya apungan yang bertindak ke atas objek?

[1mark] / [1 markah]

3(c)(i)

(ii) Determine the volume of the object. Tentukan isipadu objek itu.

[2marks] / [2 markah]

3(c)(ii)

Total A3

1

2

1

7

1

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0.90
kumsoon
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less dense
kumsoon
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0.03N
kumsoon
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0.03 / 1000(10)= 3.0x 10 -6cm 3
Page 3: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 4531/2

4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

10

4 Diagram 4.1 shows a light ray incident into a glass block.

Rajah 4.1 menunjukkan sinar cahaya merambat memasuki bongkah kaca.

For Examiner’s use

Diagram 4.1 Rajah 4.1

4(a)(i)

(a) (i) Based on Diagram 4.1, the angle of 42o is known as: Berdasarkan Rajah 4.1 , sudut 42o dikenali sebagai: ……………………………………………………………………………………………………….

[1 mark]/ [1 markah]

4(a)(ii)

(ii) Calculate the refractive index for the glass block. Hitungkan indeks biasan bagi bongkah kaca itu.

[2 marks]/ [2 markah]

(b) The light ray is adjusted so that the angle at M is now 48o, as shown in Diagram 4.2. Sinar cahaya dilaraskan supaya sudut di M ialah 48o, seperti ditunjukkan pada Rajah 4.2 .

Diagram 4.2

Rajah 4.2

1

2

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Admin
Sticky Note
critical angle
Admin
Sticky Note
n= 1/ sin c
Page 4: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 4531/2

[Turn over 4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

11

(i) On Diagram 4.2, complete the pathway for the light ray. Pada Rajah 4.2, lengkapkan laluan sinar cahaya.

[1 mark] / [1 markah]

For Examiner’s use

4(b)(i)

(ii) Explain your answer in 4(b) (i). Terangkan jawapan anda dalam 4(b)(i). .......................................................................................................................

[1 mark] / [1 markah]

4(b)(ii)

(c) Diagram 4.3 shows a light ray propagating into a glass block. Rajah 4.3 menunjukkan sinar cahaya merambat ke dalam sebuah bongkah kaca.

Diagram 4.3

Rajah 4.3

(i) On Diagram 4.3, complete the propagation of the light ray. Pada Rajah 4.3, lengkapkan perambatan sinar cahaya.

[1 mark] / [1 markah]

4(c)(i)

(ii) What happens to the angle of refraction if a denser glass block is used? Apakah yang berlaku kepada sudut biasan jika bongkah kaca berketumpatan lebih tinggi digunakan? .......................................................................................................................

[1 mark] / [1 markah]

4(c)(ii)

Total A4

1

1

1

1

7

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Page 5: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

http://exammy.com/ http://edu.joshuatly.com/

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1. The changes of direction and 2. speed of light when it crosses the boundary 3. between two materials of different optical densities.
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Real, inverted and magnified.
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X: m = 4 Y: m = 10 Z: m = 20
Page 6: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

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Y and Z
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Page 7: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 4531/2

4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

16

For Examiner’s

use

7 Diagram 7.1 shows a simple electric motor. Rajah 7.1 menunjukkan sebuah motor elektrik ringkas.

Diagram 7.1 Rajah 7.1

7(a)(i) (a) (i) Name the type of motor shown in the diagram above.

Namakan jenis motor yang ditunjukkan pada rajah di atas. ……………………………........................................................................ [1mark] / [1 markah]

7(a)(ii) (ii) What is the function of the part labeled X?

Apakah fungsi bahagian yang berlabel X? ……………………………........................................................................ [1mark] / [1 markah]

1

1

Armature armatur

X

Permanent magnet Magnet kekal

Carbon brush Berus karbon

N S

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Page 8: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 4531/2

[Turn over 4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

17

(b) (i) By refering to Diagram 7.1, draw the related catapult field in the diagram below. Dengan merujuk Rajah 7.1, lukiskan medan lastik pada rajah di bawah. [2 marks ] / [2 markah]

For Examiner’s

use

7(b)(i)

(ii) In your diagram, draw and label the direction of forces produced. Pada rajah anda, lukis dan labelkan arah daya-daya yang dihasilkan.

[1mark] / [1 markah]

7(b)(ii)

(iii) State one factor that affects the speed of rotation of the armature. Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ……………………………........................................................................ [1mark] / [1 markah]

7(b)(iii)

2

1

1

N

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Page 9: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL 4531/2

4531/2 ©2009 Copyright Bahagian Pendidikan dan Latihan (Menengah) MARA CONFIDENTIAL

18

For Examiner’s

use (c) Diagram 7.2 shows the same type of electric motor used in a blender to grind

food where a blade is attached to the electric motor. Rajah 7.2 menunjukkan motor elektrik yang sama jenis di dalam sebuah mesin pengisar yang digunakan untuk mengisar makanan di mana satu mata pisau disambungkan kepada motor elektrik

Diagram 7.2 Rajah 7.2

Suggest and explain the modifications which need to be done for each of the following: Cadang dan terangkan pengubahsuaian yang perlu dilakukan untuk setiap yang berikut:

7(c)(i)

(i) To enable the motor to be used with alternating current. Membolehkan motor digunakan dengan bekalan arus ulang alik. ……………………………......................................................................... ……………………………......................................................................... [2 marks] / [2 markah]

7(c)(ii)

Total A7

(ii) To increase the strength of the magnetic field . Menambahkan kekuatan medan magnet. ……………………………......................................................................... …………………………….........................................................................

[2 marks] / [2 markah]

2

10

Attached to blade of blender Disambung kepada

pisau pengisar

Armature Armatur

To power supply Ke bekalan kuasa

Permanent magnet Magnet kekal

2

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Page 10: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

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R2/R1+R2= V2 / Total pd R2 / R1 + R2 = 2 / 6 750 ohm
Page 11: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

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

Transistor itu dihidupkan apabila voltan tapak V ≥ 2 V.

2

≥ 2 V

(i) Write an equation to show the relationship between IB, IC and IE

Tuliskan satu persamaan untuk menunjukkan hubungan antara I.

B, IC dan IE

.

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

(ii) Calculate the minimum value of R2

Hitungkan nilai minimum R when the transistor is switched on.

2

apabila transistor itu dihidupkan.

[2 marks] [2 markah]

(c) The resistor R2

Perintang R

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

2

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

(i) State whether the bulb will light up during the day. Give reason to your

answer.

Nyatakan sama ada mentol itu akan menyala pada waktu siang. Jelaskan jawapan anda. .....................………………………………………………………………………… .....................…………………………………………………………………………

[2 marks] [2 markah]

(ii) Besides being used as a switch, state other use of a transistor.

Selain daripada digunakan sebagai satu suis, nyatakan satu kegunaan lain bagi transistor . .....................………………………………………………………………………..

[1 mark] [1 markah]

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Page 12: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

A B 40

30

θ α

Ali

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 Ali standing at the side of a pond. Ali can see the image of the fish

and the image of the dragon-fly in the water as shown by the ray diagram. Rajah 11.1 menunjukkan Ali berdiri di tepi kolam. Ali dapat melihat imej ikan dan imej pepatung di dalam air seperti yang ditunjukkan oleh rajah sinar. Diagram 11.1 Rajah 11.1

(a) (i) What is the meaning of virtual image ? [1 mark] Apakah maksud imej maya ? [1 markah]

(ii) Explain how Ali can see the image of the fish and the image of the dragon-fly. State the phenomenon of light that is involved in each case. [4 marks] Terangkan bagaimana Ali dapat melihat imej ikan dan imej pepatung. Nyatakan fenomena cahaya yang terlibat dalam setiap kes. [4 markah]

(b) (i) Calculate the angle θ and α .

[ Refractive index of water is 1.33 ] [4 marks] Hitung sudut θ dan α . [ Indeks biasan air ialah 1.33 ] [4 markah]

(ii) State one characteristic of the image of the dragon-fly. [1 mark] Nyatakan satu ciri bagi imej pepatung. [1 markah]

Water

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Page 13: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

(c) Table 11 shows the design of five torchlights P, Q, R, S and T. Jadual 11 menunjukkan reka bentuk bagi lima lampu suluh P, Q, R, S dan T. Table 11 Jadual 11 You are asked to investigate the characteristics of the five torchlights shown in Table 11. Explain the suitability of each characteristics of the torchlight and determine the torchlight which can produce a strong parallel beam of light. Give reasons for your choice. [10 marks] Anda ditugaskan untuk mengkaji ciri-ciri bagi lima lampu suluh seperti yang ditunjukkan dalam Jadual 11. Terangkan kesesuaian setiap ciri lampu suluh itu dan tentukan lampu suluh yang boleh menghasilkan satu alur cahaya selari yang terang. Beri sebab untuk pilihan anda. [10 markah]

P

Q

R

S

Concave reflector Pemantul cekung

Bulb beyond principle focus Mentol di luar titik fokus

Battery Bateri

Constantan connecting wire Wayar penyambung konstantan

Bulb at principle focus Mentol di titik fokus Copper connecting wire

Wayar penyambung kuprum

Battery Bateri

Concave reflector Pemantul cekung

Convex reflector Pemantul cembung

Bulb at the pole of the mirror Mentol di kutub cermin

Battery Bateri

Copper connecting wire Wayar penyambung kuprum

Constantant Connecting wire Wayar penyambung konstantan Battery

Bateri

Convex reflector Pemantul cembung

T

Bulb between the two plane mirror Mentol antara dua cermin satah Iron connecting wire

Wayar penyambung besi Battery

Bateri

Plane reflector Pemantul satah

Bulb at the pole of the mirror Mentol di kutub cermin

http://chngtuition.blogspot.com

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Page 14: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

SULIT 12 4531/3

4531/3 [Lihat sebelah

SULIT

Section B

Bahagian B

[ 12 marks ]

Answer any one question.

Jawab mana-mana satu soalan dalam bahagian ini.

The time suggested to answer this section is 30 minutes.

Masa yang dicadangkan untuk menjawab bahagian ini ialah 30 minit.

3 A boy pushes the boxes along a level walkway as shown in Diagram 3.1 The boy experiences

that the boxes move slowly. When the boy removes one of the boxes as shown in Diagram

3.2, he experiences that the boxes move faster than before although the same force was

applied.

Seorang budak lelaki menolak beberapa buah kotak di sepanjang satu laluan seperti yang

ditunjukkan dalam Rajah 3.1. Budak lelaki itu mendapati kotak-kotak bergerak sangat

perlahan. Apabila budak lelaki itu mengeluarkan satu daripada kotak-kotak itu seperti

ditunjukkan dalam Rajah 3.2, dia mendapati kotak-kotak itu boleh digerakkan lebih laju,

walaupun daya yang sama dikenakan.

Diagram 3.1 Diagram 3.2

Rajah 3.1 Rajah 3.2

Based on the information and observation above :

Berdasarkan maklumat dan pemerhatian di atas:

(a) State one suitable inference.

Nyatakan satu inferens yang sesuai.

[ 1 mark ]

(b) State one suitable hypothesis.

Nyatakan satu hipotesis yang sesuai.

[ 1 mark ]

(c) With the use of apparatus such as trolleys, ticker timer, ticker tape, elastic cord and

other apparatus, describe an experiment framework to investigate the hypothesis

stated in 3(b).

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Page 15: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL

Section A

Bahagian A

[28 marks /28 markah]

Answer all questions Jawab semua soalan

4531/3

1

A student carries out an experiment to investigate the relationship between the sine of the angle of incidence, i and the sine of the angle of refraction, r of a glass

block.

The arrangement of the apparatus for the experiment is shown in Figure 1.1

Ray box

Incidence ray

Glass block

i

M

r

Protractor

N

Refracted ray

FIGURE 1.1 /RAJAH 1.1

A ray of light is directed along the angle of incidence, i = 20o and forms the angle

of refraction, r. The angle of refraction is measured by using a protractor. The

corresponding reading of r1 , is shown in Figure 1.2 on page 5.

The experiment is repeated by varying the angle of incidence, i, to 30o, 40o, 50o

and 60o. The corresponding angles of refraction, r are shown in Figures 1.3, 1.4,

1.5 and 1.6 on pages 6 and 7 respectively.

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Page 16: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL

FIGURE 1.2

i = 200

The reading of the angle of refraction, r when i = 200

4531/3

4531/3

CONFIDENTIAL

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Page 17: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL

4531/3

i = 300

FIGURE 1.3

The reading of the angle of refraction, r when i = 300

i = 400

FIGURE 1.4

RAJAH 1.4

The reading of the angle of refraction, r when i = 400

Turn over

4531/3 CONFIDENTIAL

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Page 18: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL

FIGURE 1.5

FIGURE 1.6

i = 500

The reading of the angle of refraction, r when i = 500

i = 600

The reading of the angle of refraction, r when i = 600

4531/3

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CONFIDENTIAL

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Page 19: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL

(a) For the experiment described on page 4 , identify

4531/3

(i)

(ii)

the manipulated variable pembolehubah dimanipulasikan

…………………………………………………………………………

[ 1 mark ]

the responding variable

1(a)(i)

pembolehubah bergerak balas

1(a)(ii)

…………………………………………………………………………

[ 1 mark ]

(iii) the fixed variable

pembolehubah dimalarkan

1(a)(iii)

…………………………………………………………………………

[ 1 mark ]

(b) Determine the angle of incidence, i

and the corresponding angle of

refraction, r,. for Figures 1.2, 1.3, 1.4, 1.5 and 1.6.

Tabulate your results for i, r, sin i and sin r in the space below.

Tentukan nilai sudut tuju,i dan nilai sudut biasan, r yang sepadan pada Rajah 1.2, 1.3, 1.4,

1.5 dan 1.6,

Jadualkan keputusan anda bagi i, r, sin i dan sin r pada ruang di bawah.

1(b)

[ 6 marks ]

Turn over

4531/3 CONFIDENTIAL

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kumsoon
Sticky Note
angle of incidence
kumsoon
Sticky Note
angle of refraction
kumsoon
Sticky Note
density of glass block, refractive index of glass block
Page 20: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

CONFIDENTIAL

4531/3

For

Examiner’s

(c) On the graph paper on page 10, plot a graph of sin r against sin i. Pada kertas graf di halaman 8, lukiskan graf sin r melawan sin i.

1(c)

Use

[ 5 marks ]

(d) Based on your graph, state the relationship between sin r and sin i.

Berdasarkan graf anda, nyatakan hubungan di antara sin r and sin i.

1(d) …………………………………………………………………………………

[ 1 mark ]

(e) State one precaution that should be taken to obtain the accurate readings of i.

Nyatakan satu langkah berjaga-jaga yang perlu diambil untuk mendapatkan bacaan i yang

jitu.

…………………………………………………………………………………

1(e)

…………………………………………………………………………………

[ 1 mark ]

Total

4531/3

CONFIDENTIAL

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kumsoon
Sticky Note
sin r is directly proportional to sin i
kumsoon
Sticky Note
observe the protractor reading perpendicular to the eyes, to prevent parallax error, repeat the experiment for three times to get an average value to prevent systematic error
Page 21: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

9 2. A student carries out an experiment to investigate the relationship between

angle of incidence,i and angle of refraction, r of a glass block.

The results of this experiment are shown in the graph sin r against sin i in

Diagram 2.1.

(a) Based on the graph in Diagram 2.1:

(i) State the relationship between sin r and sin i.

……………………………………………………………………

[1 mark]

(ii) Determine the value of i when sin r = 0.6.

Show on the graph, how you determine the value of i.

x = …………………. [3 marks]

(iii)Calculate the gradient, m. of the graph. Show on

the graph how you calculate m.

m = ……………………. [3 marks]

4531/3 SULIT

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kumsoon
Sticky Note
sin r directly proportional to sin i
kumsoon
Sticky Note
sin i = 0.9 sin -1 0.9 =
kumsoon
Sticky Note
m = 0.65- 0/ 0.98 -0 = 0.663 (unit)
kumsoon
Pencil
Page 22: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

10

Graph of sin r against sin i

Sin r

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0 0.2 0.4 0.6 0.8 1.0 Sin i

Diagram 2.1

4531/3

SULIT

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Pencil
Page 23: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

11 (b) The index of refraction, n, of the glass is given by the formula where

m is the gradient of the graph. Calculate the value of .

= …………………… [2 marks]

(c) The relationship between the speed of light in glass, v and the speed of

light in air, c, is ,

.

where n is the index of refraction of the glass.

The speed of light in air, c = 3 x 108 m s

-1. Using the answer in 2(b),

calculate the speed of light in glass.

v = ………………………………… [2 marks]

(d) State one precaution that should be taken to improve the accuracy of the

result of this experiment.

…………………………………………………………………………….

2(c) 2(d)

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

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kumsoon
Sticky Note
n = 1/ 0.663 n= 1.508
kumsoon
Sticky Note
v = c/ n = 300000000/ 1.508 v = 2.00 x 10 8 ms-1
kumsoon
Sticky Note
observe the reading perpendicular to the eyes to prevent parallax error
Page 24: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

3. Diagram 3 shows a dented ping pong ball then put in a basin that consist cold water

(Diagram 3 (a)), warm water (Diagram 3 (b)), and hot water (Diagram 3 (c)).

Observe the shape of ping pong ball and their surroundings.

(c) . With the use of apparatus such as a thermometer, capillary tube, bunsen

burner and other apparatus, describe an experiment framework to investigate the

hypothesis stated in 3 (b).

Diagram 3 (a)

Rajah 3 (a)

Diagram 3 (b)

Rajah 3 (b)

Diagram 3 (c)

Rajah 3 (c)

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Page 25: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

Paper 3 Part B

Diagram 3.1 shows a worker pushing down on the piston of a clogged bicycle pump. Diagram 3.2 shows

the same worker finding it harder to push the piston further down.

With the use of apparatus such as a Bourdon gauge and other apparatus, describe an experiment to

investigate the hypothesis stated.

4. Diagram 4.1 show a lamp which lights up with normal brightness when the dimmer knob is set at its

minimum value. Diagram 4.2 shows the lamp dimmer when the dimmer knob is set at its maximum

value.

With the use of apparatus such as constantan wire, voltmeter and other apparatus, describe an

experiment to investigate the hypothesis stated.

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Page 26: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

(a) make one suitable inference .

The ___________________ is depend on the ____________________________

(b) state one appropriate hypothesis

The higher the _______________________, the _________ the ____________________

(c

(i) aim of the experiment

to determine the relationship between _______________ and _______________

(ii) variables in the experiment

MV _________________________

RV __________________________

CV ___________________________

(iii) list of apparatus and materials

(From list given and use to measure RV and MV with controlling the motion)

______________________________________________________

(iv) arrangement of the apparatus

(diagram with label)

(v) the procedures of the experiment

1. method of controlling the manipulated variable (initial data)

__________________________________________________

2. method of measuring the responding variable (use what and how to

measure )

____________________________________________________

____________________________________________________

3. repeat with 4 difference value

______________________________________________________

(vi) the way of tabulate data

MV, symbol and unit RV, symbol and unit

(vii) the way you would analyse the data

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Page 27: m CONFIDENTIAL 8 4531/2 - PHYSICS IS INTERESTING · Nyatakan satu faktor yang mempengaruhi kelajuan putaran gegelung wayar ... Hitungkan nilai minimum R. when the transistor is switched

(viii) analyse the data

symbol and unit

Symbol and unit

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