A convex mirror produces a magnification of `1//2` when the object is placed at a position
Channel: Doubtnut
Date: 30/08/2020

A convex mirror produces a magnification of `1//2` when the object is placed at a position A and a magnification of `1//3` when the object is at a position B. If the separation between the positions A and B be 30 cm, what is the focal length of the mirror ?