Question

a child is stading in front of a plane mirror .His father is standing behind him. the height of father is double the height of child. what is the min length of mirror required so that child can completely see his own image and his father's image

Answer 1

The minimum length of the mirror should be till his father's height. Because child is smaller than his father so u think practically if u stand in front of the mirror and ur father behind u, if he is taller than you will only be able to see him clearly when the minimum length of the mirror would cover the length of the tallest person....

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