IGCSE Physics Paper-1: Specimen Questions with Answers 44 - 45 of 109

Question number: 44

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Question

Which one of the child has minimum weight?

Three children comparing their weights with the help of seesaw

Three Children Comparing Their Weights with the Help of Seesaw

Three children X, Y and Z are comparing their weight with the help of see-saw are shown in figure.

Choices

Choice (4) Response

a.

Z

b.

X

c.

Y

d.

All of the above

Answer

c.

Explanation

Here from given figure one can conclude that

From first figure in weight Y > Z

From second figure Y > X

And from third figure Z > X

So, from all three results one can write

Therefore Y has maximum weight.

Question number: 45

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Question

Complete the table below

Table for results of different loads and corresponding lengths carried out from experiment.

Here in above table lists of measured extension in length of rubber band for different load are given.

Load (N)

0

1

2

3

Length (cm)

15.2

16.2

17.3

18.6

Extension (cm)

0

1.0

________

3.4

Find missing figure in the table?

Choices

Choice (4) Response

a.

17.3

b.

2.1

c.

18.3

d.

17.4

Answer

b.

Explanation

Here due to load extension of rubber is taking places.

From first column, when load is zero, extension is zero so original length is 15.2.

Now as load increases, the length of rubber extended. Therefore for load 2 N, the length measured is 17.3 cm.

And original length is 15.2

So missing figure in extension of length is,