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The length of needle floating on water i...

The length of needle floating on water is 2.5 cm. Calculate the added force required to pull the needle out of water `(T=7.2xx10^(-2)N//m)`

A

`3.6xx10^(-3)`N

B

`3.4xx10^(-10)`N

C

`3.0xx10^(-5)`N

D

`3.8xx10^(-11)`N

Text Solution

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The correct Answer is:
A
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