25 The effective focal length of the lens combination shown

Last updated: 6/8/2023

25 The effective focal length of the lens combination shown in th figure is 60 cm the radii of curvature of the curved surfaces of the plano convex lenses are 12 cm each and refractive index of the material of the lens is 1 5 What would be the refractive index of the liquid Liquid 1 33 h 1 42 c 1 53 d 1 6