Question

A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?

Answer 1

he angle of reflection is 50⁰, in accordance with the first law of reflection, which states that the angle of incidence is equal to the angle of reflection.
Here, the angle of incidence = 90^o - 40^o = 50^o( the angle of incidence is the angle between the incident ray and the normal).