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A convex lens focal lenghts 30 cm made o...

A convex lens focal lenghts 30 cm made of glass of refractive index `1.5` is immersed in water having refrctive `1.33`. The change in the focal length of lens is

A

`62.3` cm

B

`87.4 cm`

C

`58.2 cm`

D

`73.6 cm`

Text Solution

Verified by Experts

The correct Answer is:
B
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