Peperiksaan Percubaan Fizik Kertas 3 2008 Negeri Perak

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4531/3 Physics Paper 3 2008 1½ hours

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Name :…………………………………………………… … Form :……….

JABATAN PELAJARAN PERAK

PEPERIKSAAN PERCUBAAN SIJIL PELAJARAN MALAYSIA 2008 PHYSICS Paper 3 One hour and thirty minutes

DO NOT OPEN THE QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO 1. Write down your name and class at the space given.

Examiner’s Code Section

Question

Total mark

1

16

2

12

3

12

4

12

Marks obtained

2. This question paper is bilingually set. 3. The questions in Bahasa Melaysia have same meaning to the questions in English Language.

A

4. Candidates are allowed to answer all or part of the questions either in English Language or Bahasa Melaysia. B 5. Candidates must read the information on page18 and page 19.

Total

This question paper consist of 19 printed pages

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Section A [28 marks] Answer all questions 1. A student carries out an experiment to investigate the relationship between the extension of spring, x, and weight of load, w. Diagram 1.1 shows the arrangement of the apparatus for the experiment. Seorang murid menjalankan satu eksperimen untuk mengkaji hubungan antara pemanjangan spring, x, dengan berat pemberat, w. Rajah 1.1 menunjukkan susunan radas untuk eksperimen tersebut.

Spring Spring Retort stand Kaki retot

Pointer Penunjuk Slotted weight Pemberat

Metre rule Pembaris meter

Diagram 1.1 Rajah 1.1

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At the beginning of the experiment there is no load. The length of the spring is, lo, 20.0 cm. A load of 30 N is used and the reading is recorded. The procedures are repeated with different loads of weight, w, equal to 40 N, 50 N, 60 N and 70 N. The actual corresponding readings are shown in Diagrams 1.2, 1.3, 1.4, 1.5 and 1.6. Spring digantung tanpa pemberat pada permulaan eksperimen. Panjang spring asal, lo, 20.0 cm. Pemberat 30 N digantung pada spring dan bacaan diambil. Prosedur diulangi dengan pemberat yang mempunyai berat yang berbeza, w, iaitu 40 N, 50 N, 60 N dan 70 N. Bacaan penunjuk pada spring yang sepadan ditunjukkan pada Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6.

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47 Diagram 1.2 Rajah 1.2 Weight of slotted weight is 30 N Berat pemberat 30 N l = ……………..

57

Diagram 1.3 Rajah 1.3

Weight of slotted weight is 40 N Berat pemberat 40 N l = ……………..

66

Diagram 1.4 Rajah 1.4

Weight of slotted weight is 50 N Berat pemberat 50 N l = ……………..

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75 Diagram 1.5 Rajah 1.5 Weight of slotted weight is 60 N Berat pemberat 60 N l = ……………..

84 Diagram 1.6 Rajah 1.6 Weight of slotted weight is 70 N Berat pemberat 70 N l = ……………..

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(a) For the experiment described on page 2, identify: Bagi eksperimen yang diterangkan di halaman 2, kenal pasti: (i)

(ii)

(iii)

For Examniner’s Use

The manipulated variable Pembolehubah dimanipulasikan ……………………………………………………………………………... [1 mark] The responding variable [1 markah] Pembolehubah bergerak balas

1(a)( i )

……………………………………………………………………………… [1 mark] The constant variable [1 markah] Pembolehubah dimalarkan

1(a)( ii )

……………………………………………………………………………… [1 mark] (b) Based on Diagrams 1.2, 1.3, 1.4, 1.5 and 1.6 on page 4 and page 5: Berdasarkan Rajah 1.2, 1.3, 1.4, 1.5 dan 1.6 di halaman 4 dan 5:

1(a)( iii )

[1 markah]

(i). Record the reading of each extension of spring, l, in the spaces provided on page 4 and page 5 respectively. Catatkan bacaan pemanjangan spring, l, dalam ruang yang disediakan di halaman 4 dan 5. [2 marks] ( ii ) Calculate the values of x for each of the extension of spring. Hitungkan nilai-nilai x bagi setiap pemanjangan spring.

1(b)( i )

[ 2 markah]

[2 marks]

1(b)( ii )

[2 markah ]

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

[3 marks]

For Examniner’s Use

1(b)( iii )

[3 markah ] ( c ) On the graph paper on page 8, plot a graph of x against w . Pada kertas graf di halaman 8, lukis graph x melawan w.

[5 marks]

1(c)

[5 markah ] ( d ) Based on your graph in 1( c ), state the relationship between x and w. Berdasarkan graf anda di 1( c ), nyatakan hubungan antara x dan w. ……………………………………………………………………………………… [1 mark]

1(d)

[1 markah ]

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Graph of x against w Graf x melawan w

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BLANK PAGE HALAMAN KOSONG

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2. A student carries out an experiment to investigate the relationship between the length of constantan wire, l, and the resistance of the wire, R.

For Examniner’s Use

Seorang murid menjalankan eksperimen untuk mengkaji hubungan antara panjang dawai konstantan, l, dengan rintangan , R. The results of the experiment is shown in the graph of R against l as in Diagram 2.1 on page 11. Keputusan eksperimen ini ditunjukkan oleh graf R melawan l pada Rajah 2.1 di halaman 11. ( a ). Based on the graph in Diagram 2.1, Berdasarkan graf pada Rajah 2.1, ( i ) what happen to R as l increases? apakah yang berlaku pada R apabila l bertambah?

……………………………………………………………………………………

2(a)( i )

[1 mark ] ( ii ) determine the value of R when l = 20 cm. Show on the graph, how you determine the value of R.

[1 markah ]

tentukan nilai R apabila l = 20 cm. Tunjukkan pada graf itu bagaimana anda menentukan nilai R.

R = ……………………………………………… [2 marks]

2(a)( ii )

[2 markah ]

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Graph of R against l Graf R melawan l

R/Ω

18

16

14

12

10

8

6

4

2

0

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20

30

11

40

50

60

/ /cm

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( b ). The cross-sectional area of the wire, A, is given by the formula k A= , where m is the gradient of the graph and the value of k is 0.5 Ω cm. m

For Examniner’s Use

k , dengan m keadaan m ialah kecerunan graf dan k yang bernilai 0.5 Ω cm.

Luas keratan rentas dawai, A, diberi oleh formula A =

( i ). Calculate the gradient, m, of the graph. Hitungkan kecerunan, m, bagi graf itu.

[3 marks]

m = ……………………………..

2(b)( i )

[3 markah ]

( ii ). Determine the value of A. Tentukan nilai A. 2(b)( ii ) [2 marks ] A = ……………………………..

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[2 markah ]

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( c ). Another identical wire is connected in parallel to the wire. The total area, p A1, of the two wires in parellel is given by the formula A1 = where the m value of p is 1 Ω cm. Calculate A1.

For Examniner’s Use

Suatu dawai lain yang serupa disambung secara selari dengan dawai tersebut. Jumlah luas keratan rentas, A1, bagi dua dawai yang selari ini diberi oleh p formula A1 = dengan keadaan p bernilai 1 Ω cm. m Hitung A1.

[2 marks]

A1 = ……………………………..

2(c)

[2 markah ]

( d ). State two precautions that can be taken to improve the accuracy of the readings in this experiment.

Nyatakan dua langkah berjaga-jaga yang boleh diambil untuk memperbaiki ketepatan bacaan dalam eksperimen ini. 1. ……………………………………………………………………………… ………………………………………………………………………… 2. ……………………………………………………………………………… ………………………………………………………………………… [2 marks]

2(d)

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Section B

[12 marks] Answer any one question.

Jawab mana-mana satu soalan. 3. Diagram 3.1 shows a Bourdon Gauge which is used to measure air pressure of ball.

Diagram 3.2 shows the reading of the Bourdon Gauge increases when the ball stays for a long time under the sun.

Rajah 3.1 menunjukkan Tolok Bourdon yang digunakan untuk mengukur tekanan bola. Rajah 3.2 menunjukkan bacaan Tolok Bourdon meningkat apabila bola tersebut diletakkan di bawah sinaran matahari pada jangka masa yang lama.

Diagram 3.1 Rajah 3.1

Diagram 3.2 Rajah 3.2

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Based on the above information and observation: Berdasarkan maklumat dan pemerhatian di atas : (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]

(c)

With the use of apparatus such as a thermometer, beaker, water and other apparatus, describe an experiment framework to investigate the hypothesis stated in 3(b). Dengan menggunakan radas seperti thermometer, bikar, air dan radas lain, terangkan satu rangka kerja untuk menyiasat hipotesis yang dinyatakan di 3(b) In your description, state clearly the following: Dalam penerangan anda, jelaskan perkara berikut:

(i)

Aim of the experiment. Tujuan eksperimen.

(ii)

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 the method of controlling the manipulated variable and the method of measuring the responding variable.

Prosedur eksperimen yang mengandungi cara mengawal pembolehubah yang dimanipulasikan dan cara mengukur pembolehubah yang bergerakbalas.

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(vi)

The way you would tabulate the data. Cara untuk menjadualkan data.

(vii)

The way you would analyse the data. Cara untuk menganalisis data

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[10 marks] [10 markah]

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Diagram 4.1 and Diagram 4.2 show two cranes transferring different loads of scrapped irons.

Rajah 4.1 dan Rajah 4.2 menunjukkan dua kren pengangkat besi sedang mengangkat besi buruk yang berbeza muatan.

Diagram 4.1 Rajah 4.1

Diagram 4.2 Rajah 4.2

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Based on the above information and observation: Berdasarkan maklumat dan pemerhatian di atas : (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]

(d)

With the use of apparatus such as insulated wires, power supply and other suitable apparatus, describe an experiment framework to investigate the hypothesis stated in 3(b). Dengan menggunakan radas seperti wayar bertebat, bekalan kuasa dan lain-lain radas yang sesuai,terangkan satu rangka kerja untuk menyiasat hipotesis yang dinyatakan di 3(b) In your description, state clearly the following: Dalam penerangan anda, jelaskan perkara berikut:

(viii)

Aim of the experiment. Tujuan eksperimen.

(ix)

Variables in the experiment. Pembolehubah dalam eksperimen.

(x)

List of apparatus and materials. Senarai radas dan bahan.

(xi)

Arrangement of the apparatus. Susunan radas.

(xii)

The procedure of the experiment which include the method of controlling the manipulated variable and the method of measuring the responding variable.

Prosedur eksperimen yang mengandungi cara mengawal pembolehubah yang dimanipulasikan dan cara mengukur pembolehubah yang bergerakbalas. (xiii)

The way you would tabulate the data. Cara untuk menjadualkan data.

(xiv)

The way you would analyse the data. Cara untuk menganalisis data

[10 marks] [10 markah]

END OF QUESTION PAPER KERTAS SOALAN TAMAT

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INFORMATION FOR CANDIDATES MAKLUMAT UNTUK CALON 1. This question paper consists of two sections : Section A and Section B

Kertas soalan ini mengandungi dua bahagian: Bahagian A dan Bahagian B 2. Answer all questions in Section A. Write your answers for Section A in the spaces provided in the question paper.

Jawab semua soalan dalam Bahagian A. Tuliskan jawapan bagi Bahagian A dalam ruang yang disediakan dalam kertas soalan. 3. Answer one question from Section B. Write your answers for Section B on the ‘ helaian tambahan ’ provided by the invigilators. Answer questions in Section B in detail. You may use equations, diagrams, tables, graphs and other suitable methods to explain your answer.

Jawab satu soalan daripada Bahagian B. Tuliskan jawapan bagi Bahagian B pada halaman bergaris yang disediakan di bahagian akhir kertas soalan ini. Jawab Bahagian B dengan terperinci. Anda boleh menggunakan persamaan, gambar rajah, jadual, graf dan cara lain yang sesuai untuk menjelaskan jawapan anda. 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, neatly cross out the answer that you have done. Then write down the new answer.

Sekiranya anda hendak membatalkan sesuatu jawapan, buat garisan di atas jawapan itu.

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

Gambar rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali dinyatakan. 7. Marks allocated for each question or part question are shown in brackets.

Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan. 8. A booklet of four-figure mathematical tables is provided.

Buku sifir matematik empat angka disediakan. 9. You may use a non-programmable scientific calculator.

Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram. 10. The time suggested to complete Section A is 60 minutes and Section B is 30 minutes.

Masa yang dicadangkan untuk menjawab Bahagian A ialah 60 minit dan Bahagian B ialah 30 minit. 11. Hand in your answer sheets at the end of the examination.

Serahkan kertas soalan ini di akhir peperiksaan

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