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Question

A light ray is incident perpendicular to the plane mirror. What is the angle of incidence and the angle of reflection respectively?

A
90°; 180°
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B
0°; 180°
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C
0°; 0°
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D
0°; 90°
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Solution

The correct option is C 0°; 0°
Angle of incident is the angle between incident ray and normal. In this case light ray incident normally so angle between incident ray and normal is zero.
Angle of incidence = Angle of reflection
Angle of reflection is also zero.

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