An observer whose least distance of distinct vision is'd' views the his own face in a convex mirror
Channel: Doubtnut
Date: 2020-08-16

An observer whose least distance of distinct vision is'd' views the his own face in a convex mirror of radius of curvature 'r'.Prove that maginification produced can not exceed `(r )/(d+sqrt(d^(2)+r^(2)) `