Question

Q6.
Refraction of waves is:
a) When light changes its medium, it bends
b) When a wave changes its medium of proportional at the interface, the velocity of the wave
changes and the weave may or may not be bent, depending upon the angle of incidence
c) When a wave changes its medium of propagation at the interface the velocity of the wave changes.
the wave necessarily bends
d) None of these
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Answer 1

Answer:

When light change it's medium it bends.....

Bblegend

Answer 2

Answer:

A

Explanation:

no explanation..............