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Two thin lenses of focal lengths f(1) an...

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

A

`f=f_(1)+f_(2)`

B

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

C

`f=(f_(1))/(f_(2))`

D

`f=(f_(2))/(f_(1))`

Text Solution

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The correct Answer is:
B
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