A convex lens of focal length 30 cm , a concave lens of focal length 120 cm , and a plane mirror are
Channel: Doubtnut
Date: 2020-01-28

A convex lens of focal length 30 cm , a concave lens of focal length 120 cm , and a plane mirror are arranged as shown . For an object kept at a distance of 60 cm from the convex lens, the final image, formed by the combination , is a real image , at a distance of : `|\"Focal length\" | = |\"Focal length\"|` = `30 cm \" \" =120 cm`