A convex lens and a concave mirror having equal focal length

Last updated: 6/13/2023

A convex lens and a concave mirror having equal focal length are placed at a distance d apart A point source of light is placed at a distance of 2f from the lens on the other side The seperation between lens and mirror is in such a way that final image of the source is on the source itself The value of d is 1 2f 2 4f 3 f 4 both 1 and 2 are possible