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Find the focal length of the lens shown ...

Find the focal length of the lens shown in Fig.

A

`2/R(mu_(1)-mu_(2))`

B

`R/2((mu_(2)-mu_(1)))/(2(mu_(1)-1)(mu_(2)-1))`

C

`R/2((mu_(2)-1)/(mu_(1)-1))`

D

`R/2((mu_(1)-1)/(mu_(2)-1))`

Text Solution

Verified by Experts

The correct Answer is:
C
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