Question

Numericals:
1. A ray is incident on a plane mirror. Its reflected ray is
perpendicular to the incident ray. Find the angle of
incidence.
Ans. 45° please tell me how

Answer 1

Answer:

ANGLE OF INCIDENCE IS 45

Explanation:

reflected ray is perpendicular to the incident ray

i.e angle of incidence and reflection = 90

i=r

i+r=90

2i=90

i=45

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