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Refraction of Waves

Total questions: 8

Worksheet time: 8mins

Name
Class
Date
1.

When waves propagate from medium to another, change in __________________ can be observed.

a)

direction and frequency

b)

speed and frequency

c)

speed and direction

2.

When a water waves travels from shallow to deep water region, it travels _________________ and has __________________ wavelength.

a)

slower, shorter

b)

faster, longer

c)

faster, shorter

d)

slower, longer

3.

When a water waves from deep to shallow water region, the direction of propagation will ____________________ meanwhile if it is from shallow to deep water region, the direction of propagation will _______________________.

a)

refracted towards the normal, refracted away from the normal

b)

refracted away from the normal, refracted towards the normal

4.

A vibrating beam dipped into a tank as shown above. Which of the following wave pattern is correct?

a)
b)
c)
d)
5.

The sound of train can be heard clearly at night due to ________________

a)

magnification of sound

b)

diffraction of sound

c)

reflection of sound

d)

refraction of sound

6.

Choose the example of refraction from the situation below.

a)

Ultrasonic waves

b)

SONAR

c)

Rainbow

7.

A plane wave which has a wavelength of 3 cm and speed of 9 cms^-1 propagates across a shallow region. When the wave enters the deep region, wave speed becomes 15 cms^-1. Find the value of the wavelength in the deep region.

a)

4 cm

b)

5 cm

c)

6 cm

d)

7 cm

8.

Diagram below shows the propagation of water wave from region J to region K of different depths. Speed of the wave is 18 cmS^-1 in region J. Determine the speed of the wave in region K.

a)

3.3 cms^-1

b)

5.1 cms^-1

c)

7.2 cms^-1

d)

9.0 cms^-1