Question

What is the angle of incidence when a Ray of light incident on a concave mirror from its centre of curvature
(A)90°
(B)60°
(C)45°
(D)0°

Pls answer how it is

Answer 1

Answer:

Option d

Explanation:

Because when a ray passes from coc it retraces its path

Answer 2

Correct choice is (D) $0\°$

Explanation:

When the light ray passing through the centre of curvature of concave mirror makes an angle $0\°$ with the normal or $90\°$ with the tangent at the point where it strikes. This happens because the light ray is coming from the center of the sphere of which this curved mirror is the part. Since the incidence angle is  $0\°$ and the reflection angle is also  $0\°$ and this ray retraces its path.