Which of the following can make a parallel beam of light when light from a point source is incident on it? [NCERT Exemplar]
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:A
Which of the following can make a parallel beam of light when light from a point source is incident on it? [NCERT Exemplar]
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