peperiksaan percubaan sijil pelajaran malaysia 2005 · 4531/3 ©2005 hak cipta bahagian pendidikan...

Nama: …………………………………………… Kelas: ……………………

[Lihat sebelah 4531/3 ©2005 Hak Cipta Bahagian Pendidikan & Latihan (Menengah) MARA SULIT

MAKTAB RENDAH SAINS MARA

PEPERIKSAAN PERCUBAAN

SIJIL PELAJARAN MALAYSIA 2005

FIZIK

Kertas 3

Satu jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

Untuk Kegunaan Pemeriksa

Bahagian Soalan Markah Penuh

Markah Diperoleh

1 16

A 2 12

1 12

B 2 12

Jumlah

1. Tuliskan nama dan kelas anda pada ruang yang disediakan.

2. Kertas soalan ini adalah dalam

dwibahasa. 3. Soalan di halaman kiri adalah dalam

bahasa Melayu. Soalan di halaman kanan adalah yang sepadan dalam bahasa Inggeris.

4. Calon dibenarkan menjawab

keseluruhan atau sebahagian soalan sama ada dalam bahasa Melayu atau bahasa Inggeris.

5. Calon dikehendaki membaca

maklumat di halaman 2 atau halaman 3.

Kertas soalan ini mengandungi 31 halaman bercetak dan 1 halaman tidak bercetak

SULIT 4531/3 Fizik Kertas 3 September 2005

1½ jam

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INFORMATION TO CANDIDATES 1. This question paper consists of two sections: Section A and Section B.

2. Answer all questions in Section A. Write your answers for Section A in the spaces

provided in the question paper. 3. Answer one question from Section B. Write your answers for Section B on the lined

pages provided at the end of this question paper. Answer questions in Section B in detail. Answers should be clear and logical. You may use equations, diagrams, tables, graphs and other suitable methods to explain your answer.

4. Show your working. It may help you to get marks. 5. If you wish to cancel any answer, neatly cross out the answer. 6. The diagrams in the questions provided are not drawn to scale unless stated. 7. Marks allocated for each question or sub-section of a question are shown in brackets. 8. A booklet of four-figure mathematical tables is provided. 9. You may use non-programmable scientific calculator.

10. The time suggested to complete Section A is 60 minutes and Section B is 30 minutes. 11. Hand in all your answer sheets at the end of the examination.

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Section A

[28 marks]

Answer all questions in this section

The time suggested to complete this section is 60 minutes

1 A student carries out an experiment to find out the relationship between resistance , R ,

and the length , l, of constantan wire. The arrangement of the apparatus for the experiment is shown in Figure 1.1

FIGURE 1.1 The experiment is started by connecting a wire of length 10.0 cm to the circuit as shown in Figure 1.1, between the points X and Y. The switch is closed and the rheostat is adjusted so that the reading of the ammeter, I, is 0.5 A. The actual reading of the voltmeter,V1, as shown in Figure 1.2 on page 6, is noted. The experiment is repeated to get a second voltmeter reading, V2 The experiment is repeated by using constantan wires of length , l , of 20.0 cm, 30.0 cm, 40.0 cm and 50.0 cm. The readings of the voltmeter are shown in Figure 1.3 , 1.4 , 1.5 and 1.6 as shown on pages 6 and 7. The value of resistance , R , is calculated using the equation given below ;

R =I

Vmean

where Vmean =2

21 VV +

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Rheostat

Dry cell Switch

Constantan wire

Ammeter

voltmeter

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Bacaan Pertama ( First Reading ) Bacaan Kedua (Second Reading ) RAJAH 1.2 Panjang dawai konstantan = 10.0 cm FIGURE 1.2 Length of constantan wire = 10.0 cm



1

0

2 3

4

5 v 1

0

2 3

4

5 v

1

0

2 3

4

5 v

1

0

2 3

4

5 v

1

0

2 3

4

5 v

1

0

2 3

4

5 v

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1

0

2 3

4

5 v

1

0

2 3

4

5 v

1

0

2 3

4

5 v

1

0

2 3

4

5 v

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(a) For the experiment described on page 5 , identify;

(i) the manipulated variable,

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

(ii) the responding variable,

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

(iii) a constant variable. …………………………………………………………………………………….

[1 mark]

(b) Based on Figures 1.2, 1.3, 1.4, 1.5 dan 1.6 on pages 6 and 7, determine the values for V1, V2, Vmean, and R when l is equal to 20.0 cm, 30.0 cm, 40.0 cm and 50.0 cm. The current , I , used is 0.5 A .

Tabulate your results for V1, V2, Vmean, and R for each value of l in the space below. [7 marks] c) On the graph paper on page 11 , plot a graph of R against l.

[5 marks] d) Use your graph to state the relationship between R and l. ………………………………………………………………………………………… [1 mark]

For Examiner’s

Use

1(a)(i)

1(a)(ii)

1(a)(ii)

1(b)(ii)

1(c)

1(d)

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Graph of R against l

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Graph V1 against P

0.002

0.004

0.006

0.008

0.010

0.012

0.014

V1

/ cm-3

0 2 4 6 8 10 12 14

FIGURE 2.1

QUESTION 2 A student carried out an experiment to investigate the relationship between the pressure , P , and volume , V , of a fixed mass of gas at constant temperature.

The results of the experiment is shown in a graph of V1 against P shown in Figure 2.1.

P / N cm -2

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Based on the the graph on page 13 (a) State the relationship between P and V ………………………………………………………………………………….

[1 mark] (b) The relationship between P and V is given by the equation;

P V = k where k is the gas constant.

(i) Calculate the gradient , m , of the graph V1 against P .

Show on the graph how you determine the gradient. [3 marks]

(ii) Determine the value of the gas constant , k. [2 marks]

For Examiner’s

Use

2(a) 2(b)(i) 2(b)(ii)

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(iii) By using the value of k, determine the value of V when P = 20.0 N cm-2

[2 marks]

(c) Determine the value of V, when the pressure P = 12 N cm -2. Show on the graph how you determine the value of V. [3 marks]

(d) State one precaution to ensure that the gas mass is kept constant.

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

For Examiner’s

Use

2(a)(iii) 2(c) 2(d)

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Section B

[12 marks]

Answer any one question from this section

The time suggested to complete this section is 30 minutes

1 Figures 1.1 and 1.2 show a boy pulling two toy trucks by using a rubber band.

FIGURE 1.1

FIGURE 1.2

The toy truck which is loaded moves slower than the toy truck in figure 1.1 Using this information ;

(a) make one suitable inference, [1 mark] (b) state one appropriate hypothesis that could be investigated, [1 mark]

Hand Rubber band

Toy truck

Hand Rubber band

Toy truck

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(c) describe how you would design an experiment to test your hypothesis using a

trolley, ticker-timer and other apparatus

In your description , state clearly the following:

(i) aim of the experiment

(ii) variables in the experiment (iii) list of apparatus and materials (iv) arrangement of apparatus (v) the procedure of the experiment , which includes the method of

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

(vi) the way you would tabulate the data (vii) the way you would analyse the data

[10 marks] Lihat sebelah

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2 Figure 2.1 shows an anemometer which is used to measure wind speed.

FIGURE 2.1

It is observed that the ammeter reading increases when the wind is stronger.

Using this information ;

(a) make one suitable inference [1 mark] (b) state one appropriate hypothesis that could be investigated, [1 mark] (c) describe how you would design an experiment to test your hypothesis using a

coil, a ermanent magnet bar, a metre rule and other apparatus.

In your description , state clearly the following:

(i) aim of the experiment (ii) variables in the experiment

(iii) list of apparatus and materials

(iv) arrangement of apparatus

(v) the procedure of the experiment , which includes the method of

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

(vi) the way you would tabulate the data

(vii) the way you would analyse the data

[10 marks]

Rubber cup

Ammeter

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