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The surface tension of liquid is 0.5 N /...

The surface tension of liquid is 0.5 N / m . If a film is held on a ring of area 0.02 m square , its surface energy is

A

0.01 Joule

B

0.02 Joule

C

0.03 Joule

D

0.04 Joule

Text Solution

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The correct Answer is:
B
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