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A concave mirror of focal length f (in a...

A concave mirror of focal length `f` (in air) is immersed in water `(mu=4//3)`. The focal length of the mirror in water will be

A

`f/3`

B

`f/2`

C

`(3f)/4`

D

f

Text Solution

Verified by Experts

The correct Answer is:
D
Focal length of a concave mirror is not affected by the medium in which it is kept.
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