Question

A ray of light is incident normally on a plane mirror. What will be the:; (a) Angle of incidence?; (b) Angle of reflection?

Answer 1

Angle of incidence is equal to angle angle of reflection,i.e

I=r

Now both angle of incidence and angle of reflection is equal to zero

Answer 2

Answer: The answer is <i = <r = 0

Explanation:  (a)  The incident ray is striking the surface normally ( perpendicularly). Thus the angle of incidence will be 0 degrees.

(b) Now the law of reflection states that angle of incidence is equal to the angle of reflection. Therefore the angle of reflection will also be 0 degrees.