Question

A ray through the centre of curvature is incident on the spherical mirror makes an angle of _____ with the normal at that point.

• A. ${90}^{\circ }$
• B. $0^{\circ }$
• C. ${180}^{\circ }$
• D. ${45}^{\circ }$

Answer 1

The correct option is B

$0^{\circ }$

The ray through the centre of curvature is perpendicular to the tangent at the point of contact of the mirror and the ray. Therefore, the angle which it makes with the normal of the mirror is $0^{\circ }$.