A convex lens A of focal length 40 cm and a concave lens B

Last updated: 6/12/2023

A convex lens A of focal length 40 cm and a concave lens B of focal length 20 cm are placed co axially with a separation of 20 cm between them B being to the right of A An object is placed at a distance of 80 cm to the left of lens A Distance of its final image is at a distance from lens B of 20 cm 15 cm O 17 5 cm 22 5 cm