Question

When a ray of light is incident normally on the surface of a plane mirror, the angle of incidence is _________. OPTIONS: a. 90 degree b. 0 degree c. 45 degree d. none

Answer 1

Answer:

b 0 degree

Explanation:

angle of incidence is the angle between  incidence ray  and normal

therefore when the incident ray falls normally

angle of incidence is 0