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A boy is standing in front of a straight plane mirror. His uncle is standing behind him. 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 uncles image in the mirror.

 A boy is standing in front of a straight plane mirror. His uncle is standing behind him. 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 uncles image in the mirror.

Grade:10

1 Answers

Ansh Arora
21 Points
4 years ago
The question is similar to the derivation of the formula for minimum height of mirror required for a person standing midway to see the image of a wall behind him. = h/3Height of mirror is 6/3=2ft.Hope it helps

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