# IGCSE Physics Paper-1: Specimen Questions with Answers 22 - 24 of 149

## Question 22

### Question

MCQ▾

A glass tank contains some water with length QR and the width RS of the tank. What other distance is same to RS so that we can find volume of the water?

Choice (4)

a.

TV

b.

ST

c.

TU

d.

SV

c.

### Explanation

Here in given figure, water inside the glass tank filled till height ST.

Now, to find the volume we must know about Length, breath and height.

Here length and width QR and RS is given respectively. And from figure it is clear that width of the tank is,

## Question 23

### Question

MCQ▾

Which diagram correctly shows rays passing through a camera lens?

Choice (4)

a.

b.

c.

d.

a.

### Explanation

From camera lens we got small image at opposite side of the object. Only two options show the smaller image than the object. But arrangement of the rays correct in following image,

## Question 24

### Question

MCQ▾

What effect changes direction of water waves on moving from shallow water to deep water?

Choice (4)

a.

diffraction

b.

refraction

c.

dispersion

d.

reflection