Optics Question 910

Question: Given a point source of light, which of the following can produce a parallel beam of light

[CPMT 1974; KCET 2005]

Options:

A) Convex mirror

B) Concave mirror

C) Concave lens

D) Two plane mirrors inclined at an angle of $ 90{}^\circ $

Show Answer

Answer:

Correct Answer: B

Solution:

Object should be placed on focus of concave mirror.



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