CONFIDENTIAL 25 4531/2

[Turn page over

4531/2 CONFIDENTIAL

(iii) Relate the number of conductor and the rate of cutting of magnetic flux.

[1 mark]

Hubungkaitkan bilangan konduktor dan kadar pemotongan fluks medan magnet.

[1 markah]

(iv) Relate the rate of cutting of magnetic flux and the induced current.

[1 mark]

Hubungkaitkan kadar pemotongan fluks medan magnet dengan arus aruhan.

[1 markah]

(v) Name the physics law involved. [1 mark]

Namakan hukum fizik yang terlibat. [1 markah]

(c) Diagram 10.3 shows the structure of a generator. Explain how the generator can

be used to produce electricity.

Rajah 10.3 menunjukkan struktur sebuah penjana. Terangkan bagaimana penjana itu digunakan

untuk menghasilkan arus elektrik.

Diagram 10.3 Rajah 10.3

[4 marks] [4 markah]

Commutator Komutator

S N

Carbon Brush Berus karbon

Galvanometer

Coil Gegelung

Resistor Perintang

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CONFIDENTIAL 26 4531/2

4531/2 CONFIDENTIAL

(d) Diagram 10.4 shows the cross section of a moving coil microphone which

converts one form of energy into another.

Rajah 10.4 menunjukkan keratan rentas sebuah mikrofon gegelung bergerak yang

menukarkan satu bentuk tenaga ke bentuk yang lain.

When sound vibrates the diaphragm, the attached voice coil moves in and

out the magnetic field and generates a small electric current in the coil.

Using the appropriate concepts in physics, suggest and explain suitable

modifications or ways to enable the microphone to detect sound effectively

and generate bigger current based on the following aspects :

Apabila bunyi menggetarkan diafragma, gegelung suara yang bersentuhan dengannya

bergerak ke dalam dan ke luar medan magnet dan menghasilkan arus elektrik yang kecil di

dalam gegelung.

Menggunakan konsep fizik yang sesuai , cadang dan terangkan pengubahsuaian atau cara

yang boleh dilakukan untuk membolehkan mikrofon mengesan gelombang bunyi secara

berkesan dan menghasilkan arus yang lebih besar berdasarkan aspek-aspek berikut :

(i) The thickness of the diaphragm Ketebalan diafragma

(ii) The strength of the material for the diaphragm Kekuatan bahan untuk diafragma

(iii) The number of turns of the coil Bilangan lilitan gegelung

(iv) The diameter of the coil wire Diameter dawai gegelung

(v) The strength of the magnet Kekuatan magnet

[10 marks] [10 markah]

Diaphragm Diafragma

Diagram 10.4 Rajah 10.4

Magnet

Voice coil gegelung suara

Output Keluaran

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CONFIDENTIAL 24 4531/2

4531/2 CONFIDENTIAL

10 am 10.1(a) Diagram 10.1 shows one insulated conductor which is moved downwards in a magnetic

field. Diagram 10.2 shows three insulated conductors which are moved downwards in the

magnetic field.

Rajah 10.1 menunjukkan satu konduktor bertebat digerakkan ke bawah dalam medan magnet. Rajah 10.2

menunjukkan tiga konduktor bertebat digerakkan ke bawah dalam medan magnet.

(a) What is meant by electromagnetic induction? [1 mark]

Apakah yang dimaksudkan dengan aruhan elektromagnet? [1 markah]

(b) Using Diagram 10.1 and Diagram 10.2, compare,

Menggunakan Rajah 10.1 dan Rajah 10.2, bandingkan,

(i) The number of conductor wires [1 mark]

Bilangan wayar konduktor [1 markah]

(ii) The deflection of the galvanometer pointer [1 mark]

Pesongan penunjuk galvanometer [1 markah]

Diagram 10.1 Diagram 10.2 Rajah 10.1 Rajah 10.2

Centre-zero galvanometer Galvanometer pusat sifar

Centre-zero galvanometer Galvanometer pusat sifar

Direction of motion of insulated conductor Arah gerakan konduktor bertebat

N S N S

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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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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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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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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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(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 IETuliskan 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.

2mempunyai 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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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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(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

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CONFIDENTIAL 15 4531/3

4 Diagram 4.1 and 4.2 shows the electric circuit consist with an electric bells, switch and battery. When the switch is closed, it is observes that the bell in Diagram 4.2 rings louder than the bell in Diagram 4.1. Both electric bells in each diagram are same.

Rajah 4.1 dan 4.2 menunjukkan litar elektrik mengandungi satu loceng elektrik, suis dan sel kering. Apabila suis ditutup, didapati loceng dalam Rajah 4.2 berdering lebih kuat daripada loceng dalam Rajah 4.1. Kedua-dua loceng adalah sama bagi setiap rajah.

electric bell loceng elektrik

Diagram 4.1 Rajah 4.1

Batteries eel keying

electric bell loceng elektrik

Diagram 4.2 Rajah 4.2

4531/3 Percubaan 2010 © Hak Cipta JPNT

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[Turn Over] CONFIDENTIAL

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CONFIDENTIAL 16 4531/3

Based on the observation above and your knowledge of electromagnet; Berdasarkan pemerhatian di atas dan pengetahuan anda mengena elektromagnet;

(a) State one suitable inference. Nyatakan satu inferens yang sesuai.

[lmark] [1 markahJ

(b) State one suitable hypothesis. Nyatakan satu hip otesis yang sesuai.

[lmark ] [1 markahJ

(c) With the use of apparatus such as solenoid, paper clips and others describe an experiment framework to investigate the hypothesis stated in 4(b)

Dengan menggunakan radas seperti solenoid, klip kertas dan lain-lain , terangkan satu rangka kerja eksperimen untuk menyiasat hipotesis yang anda nyatakan dalam 4(b)

In your description, state clearly the following Dalam penerangan anda jelaskan perkara berikut

i) Aim of the experiment. Tujuan eksperimen.

Variables in the experiment. Pembolehubah dalam eksperimen.

iii) List of apparatus and materials. Senarai radas dan bahan

iv) Arrangement of the apparatus. Susunan radas.

v) The procedure of the experiment which include one method of controlling the manipulated variable and one method of measuring the responding variable. Prosedur eksperimen termasuk satu kaedah mengawal pembolehubah dimanipulasikan dan satu kaedah mengukur pembolehubah bergerak balas.

The way you would tabulate the data. Penjadualan data.

vii) The way you would analyse the data. Cara anda menganalisis data.

[10 marks] [10 markahJ

END OF QUESTION PAPER KERTAS SOALAN TAMAT

[Turn Over] 4531/3 Percubaan 2010 © Hak Cipta JPNT CONFIDENTIAL

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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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SULIT 13 4531/3

4531/3 [Lihat sebelah

SULIT

In your description, state clearly the following :

Dengan menggunakan radas seperti troli, jangkamasa detik, pita detik, tali kenyal dan lain-

lain radas, terangkan satu rangka kerja ekperimen untuk menyiasat hipotesis yang anda

nyatakan dalam 3(b)

Dalam penerangan anda jelaskan perkara berikut :

i) Aim of the experiment.

Tujuan eksperimen.

ii) Variables in the experiment.

Pembolehubah yang terlibat.

iii) List of apparatus and materials.

Senarai radas dan bahan

iv) Arrangement of the apparatus.

Susunan radas.

v) The procedure of the experiment which include the method of controlling the

manipulated variable and the method of measuring the responding variable.

Prosedur eksperimen termasuk kaedah mengawal pembolehubah

dimanipulasikan dan kaedah mengukur pembolehubah bergerak balas.

vi) The way you would tabulate the data.

Penjadualan data.

vii) The way you would analyse the data.

Cara menganalisis data.

[ 10 marks ]

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