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Two thin lenses of focal length f(1) and...

Two thin lenses of focal length `f_(1)` and `f_(2)` are in contact and coaxial. The power of the combination is

A

`f_(1)f_(2)/ (f_(1) + f_(2))`

B

`f_(1) + f_(2)/ (f_(1) f_(2))`

C

` (f_(1) + f_(2))/2`

D

`2/ (f_(1) + f_(2))`

Text Solution

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The correct Answer is:
B
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