The focal length of a plano convex lens is 20 cm The plane

Last updated: 6/24/2023

The focal length of a plano convex lens is 20 cm The plane face of it is silvered An object is placed at a distance of 60 cm from the lens on its axis on the convex side Then the distance ir cm of the image is A 120 C 40 B 30 D 60