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BITSAT2018PhysicsRay OpticsActual

A convex lens shown in the figure is made up of two types of transparent materials. A point sources of light is placed on its principal axis. If reflections from the boundaries between layers are ignored, the lens will form

Options

  1. Aonly one image
  2. Btwo images
  3. Cinfinite images
  4. Dno image at all

Correct answer

B. two images

Step-by-step solution

Since, the lens is made up of two kinds of transparent material, it has two refractive indices for the incident beam of light. Hence, there will be two focal lengths of the lens and therefore two images will be observed.

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