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COMEDK2020PhysicsRay Optics

A convex lens is made of 3 layers of glass of 3 different materials as in the figure. A point object is placed on its axis. The number of images of the object are

Options

  1. A3
  2. B4
  3. C1
  4. D2

Correct answer

C. 1

Step-by-step solution

From the given diagram, we see that lenses L₁ and L₃ are identical but eontribute opposite sease, hence their combined effect of making image is ineffoctive. Hence, only lens L_ g forms the image.

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