Question

Why a ray of light passing through the center of curvature of a concave mirror, gets reflected along the same path?

Answer 1

Dear Student,

The light ray passing from the centre of curvature is perpendicular or normal to the the spherical mirror because the ray from centre to mirror will act as the radius and we know that radius is perpendicular to the tangent at the point of contact. So angle of incidence = 0 degree, so angle of refraction will also be 0 degree. Hence, the ray will retrace its path.