Q1Multiple choice
Which of the following can make a parallel beam of light when light from a point source is incident on it?
- (a)Concave mirror as well as convex lens
- (b)Convex mirror as well as concave lens
- (c)Two plane mirrors placed at 90° to each other
- (d)Concave mirror as well as concave lens
Show answer
(a) Concave mirror as well as convex lens