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The power of lens is P=1/(f') where f is...

The power of lens is `P=1/(f')` where `f` is focal length of the lens. The dimensions of power of lens is

A

[L]

B

`[ML^(2)T^(-3)]`

C

`[L^(-1)]`

D

`[MLT^(-3)]`

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The correct Answer is:
C
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