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SMJK PEREMPUAN CHINA PULAU PINANGTRIAL EXAMINATION SPM 2014 PHYSICS Paper 3 Sept 2014 1 jam Satu jam tiga puluh minit

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DO NOT OPEN THIS BOOKLET UNTIL INSTRUCTED1. 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 this question paper.

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

4. You may use a scientific calculator.

5. The time suggested to complete Section A is 60 minutes and Section B is 30 minutes.

For examiners use

SectionQuestionFull MarksMarks

A1

16

2

12

B

312

412

TOTAL

40

Question Paper:

Set by Checked by Approved by

YCTay ...................... .......................

This question paper consists of 10 printed pages

tzSection A Section A

[28 marks]Answer all questions in this section.1 A student carries out an experiment to investigate the relationship between the compression, x, of a spring by an object placed on it and the height, h, reached by the object when released. The apparatus set-up for this experiment is shown in Diagram 1.1.

Diagram 1.1

Diagram 1.2 shows the height, h, reached by the ball when the compression, x, of the spring is 10.0 cm.

x = 20.0 cm

h = .. cm x = 10.0 cm

h = .. cm Diagram 1.3 Diagram 1.2

The experiment is repeated with compressions of x = 20.0 cm, 30.0 cm, 40.0 cm and 50.0 cm. The corresponding heights reached by the ball are shown in Diagrams 1.3, 1.4, 1.5 and 1.6.

x =50.0 cm

h = cm

Diagram 1.5 x =40.0 cm

h = cm Diagram 1.4 x = 30.0 cm

h = cm

Diagram 1.6

Diagram 1.3 x = 200 mm x = 300 mm x = 400 mm Diagram 1.6x = 600 mmh = cm

h = cm h = cm h = cm (a) For the experiment described, identify-3-

(i) The manipulated variable

.................................................................................................................................(ii) The responding variable

.................................................................................................................................(iii) A constant variable

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

(b) Based on Diagrams 1.2, 1.3, 1.4, 1.5 and 1.6,(i) Record the readings of the height, h, reached. Your answers must be to one decimal place.(ii) For each value of h, calculate h .

(c) Tabulate your results for all values of x, h and h in the space below.

(d) On the graph paper, draw a graph of h against x.

(e) Based on the graph in 1 (d), state the relationship between h and x.

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

2A student carries out an experiment to investigate the relationship between the height of a trolley, h, released from the raised end of a frictionless runway and its velocity, v, at the lower end of the runway.- 4 -

v2 (m2 s-2) v2 against hh (m)0 0.2 0.4 0.6 0.8 1.0 1.2 1.44 8 12 16 20

(a) Determine the value of v when h = 0.5 m (b) Calculate the gradient, k, of the graph. Show on the graph how you calculate k. (c) The gradient k, is given by k = 2g Calculate g. (d) The velocity of the trolley, v is given by v = (2gh) Determine the value of v when h = 0.8 m (e)State one precaution that should be taken to improve the accuracy of the readings of this experiment. - 5 -

(a) For the experiment described, identify

(i) The manipulated variable

.............................................................................................................. [1]

(ii) The responding variable

.............................................................................................................. [1]

(iii) A constant variable

.............................................................................................................. [1]

(b) Based on Diagrams 1.2, 1.3, 1.4, 1.5 and 1.6,(i) Record the readings of the height, h, reached.

(ii) For each value of h, calculate . [2]

(c) Tabulate your results for all values of x, h and in the space below.

[5]

(d) On the graph paper, draw a graph of against x. [5]

(e) Based on the graph in 1 (d), state the relationship between h and x.

............................................................................................................................. [1]

Graph of against x

2.A student carries out an experiment to investigate the relationship between the electromotive force, E and internal resistance, r of a dry cell. The result of the experiment is shown in the graph of Resistance , R against inverse current, as shown in the graph below.

Graph R against

R/

7

6

5

4

3

2

1

0

-1

-2

/A-14 13 12 11 16 15 1

(a) Based on the graph in page 6:

State the relationship between R and I ? .. [1 mark] (b)(i)Determine the value of R when = 0. Show on the graph how you determine the value of R.

R = [2 marks] / [2 marka

(ii)What is the name given to the resistance when = 0?..[1 mark]

(c)Determine the current, I, in the dry cell when R = 0.6 .Show on the graph how you determine the value of I.

I = A [3 marks]

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

m = [3 marks]] markah]

(ii)The relationship between the resistance, R, and current, I, in this experiment is given by the equation , where E is the electromotive force of the dry cell. State the value of E.

E = V [ 1 mark]

(e) State one precaution that can be taken to improve the accuracy of the results of the experiment.

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

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

[1 mark][1 mark]]

Section B [ 12 marks ]

Answer any one question from this section.

3Diagram 3.1 shows a worker drill the hard surface by using a drilling machine.Diagram 3.2 shows the worker drill at the same surface but he used smaller diameterdrill bit.drill bitDrilling machine

drill bit

Drilling machine

Diagram 3.1 Diagram 3.2

Based on the information and observation:

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

(b)State one suitable hypothesis. [ 1 mark ]

(c)With the use of apparatus such as a plasticine , weight and other apparatus, describe one experiment to investigate the hypothesis stated in 3(b).

In your description, state clearly the following :

(i) The aim of the experiment.

(ii)The variables in the experiment.

(iii)The list of apparatus and materials.

(iv)The arrangement of the apparatus.

(v)The procedure of the experiment which should include one method of controlling the manipulated variable and one method of measuring the responding variable.

(vi) The way to tabulate the data.

( vii )The way to analyse the data. [ 10 marks ]

4.Diagram 4.1 shows a notebook computer charger. The output voltage of its transformer is 50 V.Diagram 4.2 shows a mobile phone charger. The output voltage of its transformer is 5 V.

50 V 240 V

Diagram 4.1

5 V 240 V

Diagram 4.2

Based on the information and observation:

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

(b)State one suitable hypothesis. [ 1 mark ]

(c)With the use of apparatus such as insulated copper wire, iron core and other apparatus, describe an experiment to investigate the hypothesis stated in 4(b).

In your description, state clearly the following :

(i) The aim of the experiment.

(ii)The variables in the experiment.

(iii)The list of apparatus and materials.

(iv)The arrangement of the apparatus.

(v)The procedure of the experiment which should include one method of controlling the manipulated variable and one method of measuring the responding variable.

(vi) The way to tabulate the data.

( vii )The way to analyse the data.

[ 10 marks ]

~~ END OF QUESTION PAPER~~

4531/3 Physics Sept 2014