An object is placed at a distance of 20 cm from a co axial

Last updated: 6/27/2023

An object is placed at a distance of 20 cm from a co axial combination of two lenses A and B The combination of the lenses forms a real image which is four times the size of the object If lens B is concave with a focal length of 48 cm then what is the nature and focal length of lens A convex 12 cm convex 6 cm O O concave 12 cm convex 18 cm