A person AB of height 170 cm is standing...

A person AB of height 170 cm is standing in front of a plane mirror. His eyes are at height 164 cm. At what distance from P should a hole be made in mirror so that he cannot see his hair?

`167 cm`

`161 cm`

`163 cm`

`165 cm`

Text Solution

Verified by Experts

The correct Answer is:

`PM=AC=AD+DC`
`=AD+(DB)/2= 164+6/2=167 cm` .

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