A point object O is placed at a distance of `20 cm` from a convex lens of focal length
Channel: Doubtnut
Date: 05/07/2020

A point object O is placed at a distance of `20 cm` from a convex lens of focal length `10 cm` as shown in the figure. At what distance x from the lens should a convex mirror of focal length `60 cm,` be placed so that final image coincide with the object?