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2015-11-12T22:18:15+05:30

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In plane mirror of height H, we can see an object completely which has a height 2H.

So in order to see a man of height h, the mirror should be of height h/2
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2015-11-13T00:09:41+05:30

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Suppose the height of the person is  : h  units.

Place the mirror of height h/2, on the wall, nailed with the top of the mirror at a height of  h above the  floor.  So the mirror is vertically on the wall from height h to h/2.

The rays from feet and above hit the mirror at the bottom of the mirror, and then meet the eyes of the person.

The person can see the reflection / virtual image in this.
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