Question

Figure shows two convex lenses A and B, each made up of three different transparent materials. The number of images formed, of an object kept on the principal axis of each lens will be

• A. 3 and 3
• B. 3 and 1
• C. 1 and 1
• D. 3 and 2

Answer 1

The correct option is B 3 and 1

In the first figure, the three different portions of lens possess three different focal lengths.

Hence three different images would be observed.

In the second figure, the three lenses would effectively act as a single lens system.

Hence a single image would be observed.