Question

A ray of light is incident normally on plane mirror wht will be angle of (a) angle of of incidence and (b) angle of reflection​

Answer 1

Answer:

Angle of incidence will be 90 degree.

Angle of reflection will be zero degree

Explanation:

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Answer 2

Answer:Case (a):

If a ray of light is incident normal to the surface of the plane mirror, then the angle of incidence is 0°

, as the normal passes perpendicularly to the mirror.

Case (b):

The Second Law of Reflection states that the angle of incidence is always equal to the angle of reflection. Therefore, the angle of reflection is same as the angle of incidence, that is, 0°

. So the reflected ray will retrace the path of the incident ray.