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A boy is standing in front of an erect plane mirror. His uncle is standing behind him as shown. The height of the boy is 3 feet and that of the uncle is 6 feet. What is the minimum length of the mirror required so that the boy can completely see his uncle’s image in the mirror? |
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Answer» A boy is standing in front of an erect plane mirror. His uncle is standing behind him as shown. The height of the boy is 3 feet and that of the uncle is 6 feet. What is the minimum length of the mirror required so that the boy can completely see his uncle’s image in the mirror?
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