Question

A ray of light falls normally on a plane mirror.
What is the angle of incidence?​

Answer 1

Answer:

Oo

Explanation:

As ray of light falls normally on mirror this means that angle of incidence is 0o. From second law of reflection we know that angle of incidence is equal to angle of reflection. So angle of reflection will also be zero. Therefore the light ray will be reflected back along the same path.

Answer 2

Explanation:

the angle of incidence is 00 , since angle of incidence is the angle between incident Ray and normal direction of reflected ray is angle ba is opposite to the direction of incident Ray