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If the length of a needle floating on wa...

If the length of a needle floating on water is 2 cm then the additional force due to surface tension required to pull the needle out of water will be.
`S.T of water=7.0xx10^-2N//m)`

A

`28xx10^-4 N`

B

`32xx10^-4 N`

C

`14xx10^-4N`

D

`20xx10^-4 N`

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