Question

Explain the following terms:
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal.

Answer 1

Incident ray - The ray of light falling on the surface AB is called the incident ray. In figure, PN Is the Incident ray.

Reflected ray - The Incident ray bouncing back In the same medium after striking the reflecting surface is called reflected ray. In figure, NQ Is the reflected ray.

Angle of Incidence - The angle formed between the incident ray and the normal Is the Angle of Incidence. (PNM is the Angle of Incidence.)

Angle of reflection - The angle formed between the normal and the reflected ray Is called angle of reflection (MNQ is the angle of reflection)

Normal - It is the line drawn perpendicular to the reflecting surface at the point of incidence. MN is normal.