Question

Two light rays $P$ and $Q$ are incident an optical device ${}^{\prime }{X}^{\prime }$ which finally goes along ${}^{\prime }{R}^{\prime }$ and ${}^{\prime }{S}^{\prime }$. Identify optical device ${}^{\prime }{X}^{\prime }$.

• A. Concave lens
• B. Concave mirror
• C. Convex lens
• D. Convex mirror

Answer 1

The correct option is D Convex mirror

Since in convex mirror, a ray travelling parallel to the principal axis virtually emanates from the virtual focal point after reflection by the mirror.

Hence, optical device would be convex mirror i.e., option (d)