Question

7. A ray of light falls normally on a plane mirror.
What is the angle of incidence ?​

Answer 1

Tge angle which an incident line or ray makes with a perpendicular to the surface at the point of incidence.

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Answer 2

Answer:

if a ray of light falls normally on the surface of a plane mirror,it gets reflected along the same path because the angles of incidence and reflection is both equal to zero