Question

What happens to the light rays when it travels from rarer medium to denser medium perpendicularly?​

Answer 1

Answer:

When light rays travel from optically rarer medium to denser medium then they bend towards normal. In this case angle of refraction is smaller than angel of incidence. When light rays travel from air into glass or from air into water, it bends towards normal.

Answer 2

Answer:

0(zero) refraction occur.

Explanation:

angle of incidence = angle of refraction

Given= angle of incidence = 0 (light incident perpendicularly to plane)

So, angle of refraction is also 0.