Question

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

Answer 1

Any line joining the cetre of curvature and a point on the circumference makes 90° with it.A ray passing through the centre willthus make 90° or be normal to the surface. Thus the angle of incidence =0° Therefore angle of reflection=0° ;which is possible only when they are the same lines