![Which of the following can make a parallel beam of light when light from a point source is incident on it?](https://www.gkseries.com/blog/wp-content/uploads/2022/05/Which-of-the-following-can-make-a-parallel-beam-of-light-when-light-from-a-point-source-is-incident-on-it-1.png)
Q. 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
Answer: Concave mirror as well as convex lens