Question

In which case a light ray does not deviate a the interface of two media

Answer 1

Answer:

When light incident at normal.

Explanation:

Q.Light rays doesn't deviate at the interface of two media ?

When light rays incident at normal it doesn't deviate at the interface of the two media.

Because the angle between the interface and the light rays makes right angle.

If light rays incident obliquely it either bends towards Normal or away from Normal depending upon the medium.

• I.e, Towards normal if light enters from rarer to denser.

• Away from Normal if light enters from denser to rarer.