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A wire of length 10 cm is gently placed ...

A wire of length 10 cm is gently placed horizontally on the surface of water having a surface tension of `75xx10^(-3)` N/m . What is the force required to pull up the wire from the surface .

A

`10^(2)`

B

`0.5 xx10^(-2)`N

C

`1.5 xx10^(-2)`N

D

`2xx10^(-2)`N

Text Solution

Verified by Experts

The correct Answer is:
C
` F = 2(TL)= 2xx 75 xx 10^(-3) xx 10 xx 10^(-2)`
` =150 xx 10^(-4) = 1.5 xx 10^(-2)` N
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