Refraction of Waves

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

• direction and frequency

• speed and frequency

• speed and direction

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

• slower, shorter

• faster, longer

• faster, shorter

• slower, longer

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 _______________________.

• refracted towards the normal, refracted away from the normal

• refracted away from the normal, refracted towards the normal

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

• 
• 
• 
• 

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

• magnification of sound

• diffraction of sound

• reflection of sound

• refraction of sound

Choose the example of refraction from the situation below.

• Ultrasonic waves

• SONAR

• Rainbow

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.

• 4 cm

• 5 cm

• 6 cm

• 7 cm

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.

• 3.3 cms^-1

• 5.1 cms^-1

• 7.2 cms^-1

• 9.0 cms^-1