Q. Given a point source of light, which of the following can produce a parallel beam of light
A) Convex mirror
B) Concave mirror
C) Concave lens
D) Two plane mirrors inclined at an angle of $90{^\circ}$
Explanation
(b) Object should be placed on focus of concave mirror
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.