Which of the following can make a parallel beam of light when lig… - Vidyadip

MCQ

Which of the following can make a parallel beam of light when light from a point source is incident on it?

✓
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

Correct option: A.

Concave mirror as well as convex lens.

When a point source of light is at the focus of a concave mirror or a convex lens, then emergent rays of light make a parallel beam of light. This is the reason; concave mirror is used as reflector of headlights.

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