The angle of incidence for a ray of light passing throught the centre of curvature of a concave mirror is :

What will be the angle of incidence when a ray of light passes through the centre of curvature of a concave mirror?

Explain why a ray of light passing through the centre of curvature of a concave mirror gets reflected along the same path after reflection.

A light ray is incident on a concave mirror which passes through the centre of curvature of a concave mirror. Which of these rays indicates the reflected ray ?

If the light ray is passing through the centre of curvature of a concave mirror, it doesn't deviate. Why ?