Question

Definition of normal in light chapter

Answer 1

At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror. This line is known as a normal line (labeled N in the diagram). The normal line divides the angle between the incident ray and the reflected ray into two equal angles.

Answer 2

Answer:

Normal is a line drawn perpendicular to the surface of mirror from point the point where incident ray meets the surface of the mirror. The angle of incidence is the angle the incident ray makes with the normal drawn at the point of incidence of the incident ray on he surface of the mirror.