Question

A man is standing at distance x from a plane mirror in front of him. He wants to see the entire wall
of height hin mirror which is at a distance y behind the man. Find the minimum size of the mirror
required
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Answer 1

triangle MFB, A is midpoint of BM and AE is parallel to BF. E is midpoint of MF. Therefore, to see the complete wall infront of height H in the mirror the person will require plane mirror of 1/3 of height of wall

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Answer 2

Answer:

Ur answer is 1/3

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