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प्रश्न
Observe the picture given in the following figure carefully.
A patch of light is obtained at B, when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?
विकल्प
A wooden board
A glass sheet
A mirror
A sheet of white paper
MCQ
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उत्तर
A mirror
Explanation:
Only a mirror can reflect a patch of light and change its direction.
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