# CIE Physics Paper-1: Specimen Questions 38 - 40 of 109

## Question number: 38

MCQ▾

### Question

Find order of weight of 3 children on the see saw.

Which of the following is correct order of the children’s weights?

### Choices

Choice (4) Response
a.

b.

c.

d.

d.

### 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

## Question number: 39

MCQ▾

### Question

What is the ratio of the primary turns to the secondary turns for a transformer with input 400000 V and output of 20000 V?

### Choices

Choice (4) Response
a.

1: 20

b.

1: 200

c.

20: 1

d.

1: 2

c.

### Explanation

Here and are given.

Primary turn = ,

Secondary turn =

The ratio of turns of primary coils and turns of secondary coil is given as,

## Question number: 40

MCQ▾

### Question

Hydro-electric power station converts which form of energy?

### Choices

Choice (4) Response
a.

oil

b.

waves

c.

hot rocks

d.

falling water