Question

A convex lens is made up of three different materials.how many of images does it form

Answer 1

Actually it is made up of two different types of material. both of the materials have different refractive indices.

SO THE GIVEN LENSE HAVE TWO DIFFERENT FOCAL LENGTH .

SO IT CAN FORM 2 IMAGES.

Answer 2

A lens made of three different materials of refractive indices say n1, n2, n3. These three materials will have three different refractive indices. Thus for a given object it forms three images.