Question

Why does a ray of light passing through the centre of curvature of a concave mirror is reflected back along the same path after reflection ?

Answer 1

Because the centre of curvature is the normal line so it will reflect the same path

Answer 2

Answer:

because centre of curvature is the normal line for the light rays.

Explanation:

centre of curvature is zero degree.

so, angle of incidence is equal to angle of reflection is equal to zero degree.

so, it retraces the path