15 A plano convex lens fits exactly into a plano concave

Last updated: 6/9/2023

15 A plano convex lens fits exactly into a plano concave lens Their plane surface are parallel to each other If lenses are made of different materials of refractive index and and R is radius of curvature of the curved surface of the lenses then focal length of the combination is R 1 2 H H 3 1 2R anal ev R 2 H H 4 7 R 9