Question

The diagram below shows a ray of light traveling parallel to the principle axis of a concave spherical mirror. Point $F$ is the principle focus and point $C$ is the centre of curvature.
After striking the mirror, the ray of light will be reflected through the point:

• A. $A$
• B. $D$
• C. $C$
• D. $F$

Answer 1

The correct option is D $F$

Ray of light passing parallel to the principal axis upon reflection from the concave mirror passes through the focus. Hence, after reflection, it will pass through $F$.