Published by:
CGP EDU Academic Team
Published on: August 11, 2026
A lens having refractive index 1.6 has focal length of 12 cm , when it is in air. Find
the focal length of the lens when it is placed in water.
(Take refractive index of water as 1.28)
Text Solution
Verified by ExpertsThe correct answer is:
B
As we know,
For air 
For water
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