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Question

A light ray is incident on a mirror such that it makes it makes 30 with the surface of the mirror. The angle of reflection is


A

60

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B

90

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C

20

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D

0

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Solution

The correct option is A

60



AOX forms a right angle. So, the incident ray makes 60 with the normal.

According to the first law of reflection,
Angle of incidence = Angle of reflection
So Angle of reflection = 60


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