General Properties Of Waves COPY

Question 1

In a transverse wave the oscillations are ………. To the direction of energy transfer

Answer 1

Perpendicular

Question 2

In a longitudinal wave the oscillations are ………. To the direction of energy transfer

Answer 2

Parallel

Question 3

What type of waves show areas of compression and rarefaction

Answer 3

Longitudinal

Question 4

What type of waves are electromagnetic waves

Answer 4

Transverse

Question 5

What type of waves are sound waves

Answer 5

Longitudinal

Question 6

What type of waves are mechanical waves

Answer 6

They may be either transverse or longitudinal

Question 7

What do waves transfer

Answer 7

Waves transfer energy and information without transferring matter

Question 8

Waves can be …., ….. and ….

Answer 8

Waves can be reflected, refracted and diffracted

Question 9

Reflection

Answer 9

The change in direction of a light ray or a wave at a boundary when the ray or wave stays in the incident medium

Question 10

Refraction

Answer 10

The change in direction of a light ray when it passes across a boundary between two transparent substances (including air)

Question 11

Diffraction

Answer 11

The spreading of waves when they pass through a gap or around the edges of an obstacle which has a similar size as the wavelength of the waves

Question 12

What must be the case of appreciable diffraction to take place

Answer 12

For appreciable diffraction to take place, the wavelength of the wave must be of the same order of magnitude as the size of the obstacle or gap