COMEDK · Physics · 25. Ray Optics
Which mirror is to be used to obtain a parallel beam of light from a small lamp?
- A Plane mirror
- B Convex mirror
- C Concave mirror
- D Any one of the above
Answer & Solution
Correct Answer
(C) Concave mirror
Step-by-step Solution
Detailed explanation
A concave mirror is of converging type as the light parallel to principal axis converges at its focus. So, when a lamp is placed at its focus, the ray of light falling on it becomes parallel beam as shown below.
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