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Question

A ray of light is incident on a plane mirror at an angle 50. The deviation produced by the plane mirror will be

A
70
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B
80
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C
120
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D
130
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Solution

The correct option is B 80

Deviation produced by plane mirror,
δ=1802i
(i=50)
δ=180100=80
Hence, option (b) is the correct answer

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