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MHT CET202121 Sep 2021Evening ShiftPhysicsRay OpticsActual

A convex lens is dipped in a liquid whose refractive index is equal to refractive index of lens material. Then its focal length will

Options

  1. Aincrease
  2. Bremain unchanged
  3. Cbecome infinite
  4. Dbecome zero

Correct answer

C. become infinite

Step-by-step solution

For a lens 1 f = ( ^ -1 ) ( 1 R ₁ - 1 R ₂ ) Where ^ = _ g _ =1 1 f =0 or f =

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