The work done in increasing the size of ...

The work done in increasing the size of a soap film from 10 cm × 6 cm to 10 cm × 11 cm is `3 xx10^(-4)` joule . The surface tension of the film is

`1.5xx10^(-2)`N/m

`3.0xx10^(-2) `N/m

`6.0xx10^(-2)` N/m

`11.0xx10^(-2)` N/m

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