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

The surface tension of a liquid is `5Nm^-1`. If a film of that liquid on a ring of area `0.02m^2`, its surface energy is about

A

A. `5xx10^-2` joule

B

B. `2.5xx10^-2` joule

C

C. `2xx10^-1` joule

D

D. `3xx10^-1` joule

Text Solution

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The correct Answer is:
C
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