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Question

# Two plane mirror are inclined to each other such that a ray of light incident on the first mirror (M1) and parallel to the second mirror (M2) is finally reflected form th second mirror (M2) parallel to the first mirror (M1) the angle between the two mirrors will be :

A
600
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B
750
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C
900
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D
450
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Solution

## The correct option is A 600 Assuming angles between two mirrors be θ . we know that angle made by light ray for incidence and reflection with mirror 95 Same. Now by geometry Sum of angles in a triangle =180∘30=180∘θ=60∘

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