Question

Define the following terms used in reflection of light:
(i) Normal
(ii) Angle of incidence
(iii) Angle of reflection
Ans. NORMAL

Answer 1

The perpendicular to a reflecting or refracting surface at the point of incidence of the ray concerned is called normal.
ANGLEOF INCIDENCE
The angle between the incident ray and the normal is called angle of incidence.
The angle between the normal and the reflected ray is called angle of iflon.

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