When a thin convex and a thin concave lens are placed in

Last updated: 6/25/2023

When a thin convex and a thin concave lens are placed in closed contact their equivalent focal length is 50 cm The ratio of power of convex and concave lens is 2 1 then their individual focal lengths are 120 cm 40 cm 2 25 cm 50 cm 20 cm 40 cm 4 35 cm 45 cm