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AP EAMCET2020PhysicsRay Optics

A concave lens of glass, refractive index 1.5 has both surfaces of same radius of curvature R . On immersion in a medium of refractive index 1.75 , it will behave as a

Options

  1. AConvergent lens of focal length 3.5 R .
  2. BConvergent lens of focal length 3.0 R
  3. CDivergent lens of focal length 3.5 R .
  4. DDivergent lens of focal length 3.0 R

Correct answer

A. Convergent lens of focal length 3.5 R .

Step-by-step solution

No solution. Refer to answer key.

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