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

Answer

160 cm min, 320 cm max

Explanation

`(H_("min"))/(80cm) = (40cm)/(20cm)`
`implies H_("min") = 160 cm` & `(H_("min"))/(80cm) = (80 cm)/(20 cm)`
`implies H_("max") = 320 cm`