Question

A ray through the Centre of Curvature hitting a spherical mirror makes an angle of __________ with the normal.

• 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 basically passing through a radius of the spherical mirror. Since radius is perpendicular to the tangent at the point of contact, so the ray is perpendicular to the surface. Therefore, the angle which it makes with the normal is $0^{\circ }$ in this case.