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Focal length of a convex lens of refract...

Focal length of a convex lens of refraction Index 1.5 Is 2 cm. The focal length of lens when immersed in a liquid of refractive index of 1.25 will be.

A

10 cm

B

2.5 cm

C

5 c

D

7.5 cm

Text Solution

Verified by Experts

The correct Answer is:
C
5 c
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