Question

5. When a light ray is incident normally at the boundary while entering to a glass slab from air,
(a) bends towards the normal (6) goes away from the normal (c) returns back in to the air
c) does not change its direction​

Answer 1

Answer:

a. bends towards normal

Explanation:

when light enters from rare to denser medium it bends towards normal

Answer 2

Answer:

when light ray is incident normally then it does not change its direction. but its speed is reduced.

Explanation:

so last option is correct.