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The graph of manification v//s image dis...

The graph of manification `v//s` image distance of a thin lance is given. Its focal length will be -

A

`f=(-a)/(c)`

B

`f=(-b)/(c)`

C

`f=(-c)/(b)`

D

`None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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