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KVPY SA Exam 05-Nov-2017 Question Paper

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Question : 67

Total: 80

A long horizontal mirror is next to a vertical screen (See figure). Parallel light rays are falling on the mirror atan angle α from the vertical. If a vertical object of height h is kept on the mirror at a distance d > h tan (α). Thelength of the shadow of the object on the screen would be

h/2
h tan (α)
2h
4h

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