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SULIT 4531/3Name: .. Class: ..

SEKOLAH MENENGAH KEBANGSAAN KUBONG

PEPERIKSAAN KENDALIAN SEKOLAH PERTAMA 2012

PHYSICS FORM 5

PAPER 3

One hour thirty minutes

DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO.

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 questionpaper.

3. Answer one question in Section B. Answer the question

in Section B in detail, clearly and logically.

4. The diagrams in the questions provided are not

drawn to scale unless stated.

5. Marks allocated for each question and sub-section

of a question are shown in brackets.

6. The time suggested to complete Section A is60 minutes and Section B is 30 minutes.

This question paper consists of 8 printed pages

Examiners Code

Section Question Full

Marks

Marks

obtained

A

1 16

2 12

B

1 12

2 12

Total

Physics

Paper 3

May

2012

1 jam

NO. KAD PENGENALAN

ANGKA GILIRAN

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Section A

[ 28 marks]

Answer all questions.

Jawabsemua soalan.

1. A student carries out an experiment to investigate the relationship between the object distance, u andthe image distance, v, of a convex lens with focal length, f,. The apparatus is set up as shown inDiagram 1.1

The object distance is fixed at u = 34 cm, 30 cm, 26 cm, 20 cm and 16 cm. The convex lens is

placed at the zero mark on the scale of the metre rule when the image distance, v, is measured.

Diagram 1.2, 1.3, 1.4, 1.5 and 1.6 showed the end part of metre rule when the image

distance, v, is measured.

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(a) For the experiment described above, identify:(i) The manipulated variable

[1 mark]

(ii) The responding variable

[1 mark]

(iii)The constant variable

[1 mark]

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(b) Based on diagram 1.2, 1.3, 1.4, 1.5 and 1.6, determine the magnitude of v, and

, when u is

equal to 34 cm, 30 cm, 26 cm, 20 cm and 16 cm.

Tabulate the values ofu, v,

and

in the space below.

[6 marks]

(c) On the graph paper, plot a graph ofagainst

.

[5 marks]

(d) Based on your graph, state the relationship between

and

.

[1 mark]

(e) State a precaution that should be taken to obtain the accurate result.

[1 mark]

2. A student carries out an experiment to determine the relationship between height, h of the raised endof an inclined track and the acceleration, a of a trolley as it moves freely down the inclined track.

A ticker-timer and ticker tapes are used to determine the acceleration of the trolley in this

experiment. The results of the experiment are shown in the graph ofa against h in Diagram 2.

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h/m

Diagram 2

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(a) State the relationship between a and h...

[1 mark]

(b) Determine the value ofh when a = 3.2 ms-2Show on the graph in Diagram 2 how you determine the value ofh.

...[3 marks]

(c) The gradient, m of the graph is given by the formula m= where g is the gravitational acceleration

and l is the length of the inclined runway.

(i) Calculate the gradient, m of the graph.Show on the graph how you determine m.

[3 marks]

(ii) Using the formula m=

and the value ofm in (c) (i), calculate the value ofg. [use l = 2.0 m]

[2 marks]

(d)

The experiment is repeated using another inclined runway of length, l = 3.0 m. the lifted end of theinclined runway is fixed at a height, h = 0.4m. by using the formula a=

and the value of g in (c)

(ii), calculate the acceleration, a of the trolley.

[2 marks](e) State one precaution that should be taken during the experiment. .

[1 mark]

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(a)

At 20C

(b)

At 270C

DIAGRAM 3.1

SECTION B

[12 Marks]Answer any one question..

Jawab mana-mana satu soalan.

3. Diagram 3.1(a) shows an enclosed balloon containing 3.0 cm3 of air at a temperature of 2.0 0C in

a refrigerator. When the balloon was taken out and placed in room where the temperature was

27.00C, the air in it expanded, as shown in Diagram 3.1(b)

Based on the above information and observation:

(a) State a suitable inference. [ 1 mark ](b) State a suitable hypothesis. [ 1 mark ](c) With the use of apparatus such as a metre rule, thermometer and other apparatus,

describe an experiment framework to investigate the hypothesis stated in 3(b).

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 the apparatus.

(v) The procedure of the experiment which include 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 ]

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4. Diagram 4.1 shows shed A lighted up by a lamp connected to a battery using short connecting

wire. Diagram 4.2 shows shed B lighted up by a lamp connected to battery using a long

connecting wire.

Based on the above information and observation:

(a) State a suitable inference. [ 1 mark ](b)

State a suitable hypothesis. [ 1 mark ]

(c) With the use of apparatus such as 1.5 V battery, nichrome resistance wire, connectionwire and other apparatus, describe an experiment framework to investigate the

hypothesis stated in 4(b).

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 the apparatus.(v) The procedure of the experiment which include 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]