The power of a lens having refractive index 1.25 is +3D. When placed in a liquid its power is -2 D. The refractive index of the liquid is
Text Solution
Verified by ExpertsThe correct answer is:
C
The len's maker formula is given as
Apply lens maker formula in air
……… ..
Apply lens maker formula in liquid
………
Dividing by , we get.
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