The surface tension of a liquid is 5Nm^-...

The surface tension of a liquid is `5Nm^-1`. If a thin film formed on a loop of area `0.02m^-2` then its surface energy will be

A

`5xx10^(-2)`J

B

`2.5xx10^(-2)` J

C

`2xx10^(-1)` J

D

`3xx10^(-1)` J

Text Solution

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The correct Answer is:

C

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