Question

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

Answer 1

90 degree is the angle of incidence

Answer 2

Answer:

when a ray of light passing through the centre of curvature of a concave mirror falls normally on the mirror and therefore retrace its path

so the angle of incidence for a Ray of light passing through the centre of curvature of a concave mirror is zero degree (0)