A ray of light, passing through the centre of curvature, is incident on a concave mirror. It is reflected by an angle of _______.

Correct option is B

Sol: The correct answer is (b) $$0^∘$$

When a ray of light passes through the center of curvatureof a concave mirror, it is incident on the mirror along the normal to the mirror's surface.

Key Points:

• The center of curvature lies on the principal axis of the concave mirror and is equidistant from every point on the mirror's surface.
• A ray passing through the center of curvature strikes the mirror perpendicularly (at 90° to the tangent of the mirror's surface at the point of incidence).
• According to the law of reflection, the angle of incidence ($i$) is equal to the angle of reflection ($r$).