in figure shown `AB` is a plane mirror of length `40cm`placed at a height `40cm`from grpund

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in figure shown `AB` is a plane mirror of length `40cm`placed at a height `40cm`from grpund There is a light source`S`at a point on the ground ,Find the maximum and minimum height of a man(eye height)required to see the image of the source If he is standing at a point`A` on ground shown in figure.
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