Question

In the following cases, a ray is incident on a concave mirror. In which case is the angle of incidence equal to zero?

A. A ray parallel to the principal axis.

B. A ray passing through the centre of curvature and incident obliquely.

C. A ray passing through the principal focus and incident obliquely.

D. A ray incident obliquely to the principal axis, at the pole of the mirror.

Answer 1

Correct option is (B) A ray passing through the centre of curvature and incident obliquely.

In the following cases, a ray is incident on a concave mirror. A ray passing through the centre of curvature and incident obliquely is the angle of incidence equal to zero.