Fundamentholfundamenthol
JEE Main2019Physics
Q.

A plano convex lens of refractive index and focal length f1 is kept in contact with another plano concave lens of refractive index and focal length f2. If the radius of curvature of their spherical faces is R each and f1 = 2f2, then 1 and 2 are related as :

  1. A

    + = 3

  2. B

    2 – = 1

  3. C

    2 – = 1

  4. D

    3 – 2 = 1

Solution

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