IGCSE Physics Paper-1: Specimen Questions with Answers 12 - 14 of 149

Question number: 12

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Question

Table for results of different load and corresponding length carried out from experiment

Load (N)

0

1

2

3

Length (cm)

20

________

22.1

24

Extension (cm)

0

1.0

2.1

4

Choices

Choice (4)

a.

21 cm

b.

17 cm

c.

16 cm

d.

21.3 cm

Answer

a.

Explanation

Here due to load extension in length of rubber is taking places.

From first column, when load is zero, extension is zero so original length is 20.

Now as load increases, the length of rubber extended. Therefore for load 1 N, the extension of length is 1.0 cm.

And original length is 20

So missing figure in length is,

Question number: 13

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Question

What metal should be used to form a permanent magnet from a magnetizing coil on a piece of metal?

Magnetizing coil with metal road

Magnetizing Coil with Metal Road

Choices

Choice (4)

a.

copper

b.

steel

c.

iron

d.

aluminum

Answer

b.

Explanation

Only iron and steel shows the magnetic effect during electric current flow in the coil. But steel is used to make permanent magnet because it would continue as magnet after the electricity switched off.

Question number: 14

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Question

Find the water level in the diagram below.

Measuring cylinder with water.

Measuring Cylinder with Water

Which option is be most suitable for its scale?

Choices

Choice (4)

a.

55

b.

58

c.

60

d.

50

Answer

a.

Explanation

Here in above figure we shows that the cylinder contain water up to certain point.

Now it is clearly show in figure that till at point 55 water is filled. Thus one can say that volume of water is 55 mm3.

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