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A long horizontal mirror is next to a vertical screen (See figure). Parallel light rays are falling on the mirror at an angle `alpha` from the vertical. If a vertical object of height h is kept on the mirror at a distance `d gt h tan (alpha)`. The length of the shadow of the object on the screen would be

A

h/2

B

`htan (alpha)`

C

2h

D

4h

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The correct Answer is:
C
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