A film of soap solution is formed in a ...

A film of soap solution is formed in a rectnagular wire frame of length 10 cm and breadth 5 cm . The surface energy of the film , if the surface tension of soap solution is 0.035 N/m is

A

`5.5xx10^(-4)` J

B

`3.5xx10^(-4)` J

C

`1.75xx10^(-4)` J

D

`2.75xx10^(-4)` J

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The correct Answer is:

B

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