The workdone in increasing the size of ...

The workdone in increasing the size of a soap film from `10 cm xx 6 cm` to `10 cm xx 11 cm` is `3 xx 10^(-4)J.` The surface tension of the film is

`1.5xx10^(-2)Nm^(-1)`

`3.0xx10^(-2)Nm^(-1)`

`6.0xx10^(-2)Nm^(-1)`

`11.0xx10^(-2)Nm^(-1)`

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