A point source of light 
, placed at a distance 
infront of the centre of plane mirror of width 
,hangs vertically on a wall. A man walks infront of the mirror along a line parallel to the mirror at a distance 
from it (see in the figure). The distance between the extreme points where he can see the image of thelight source in the mirror is 
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150 JEE Main 2021
from similar triangle 
and 
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