ScienceClass 10CBSE
Q
1. 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 Concave mirror as well as concave lens
A
- Soln:
Answer is (a) Concave mirror as well as convex lens
Explanation:
Emergent beams are parallel and the image is produced at infinity when light rays from a point source are incident on a concave mirror and convex lens.