The power of a lens | GEOMETRICAL OPTICS | JEE-MAIN 2022

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JEE MAIN 2022

28-07-2022 S2

Question

The power of a lens (biconvex) is $1.25 \mathrm{~m}^{-1}$ in particular medium. Refractive index of the lens is 1.5 and radii of curvature are 20 cm and 40 cm respectively. The refractive index of surrounding medium :

Select the correct option:

A

1.0

B

9/7

C

3/2

D

4/3

✓ Correct! Well done.

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Solution

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