Surface area of a soap bubble is 1.3xx1...

Surface area of a soap bubble is `1.3xx10^(-4) m^2`. The work done to doble the surface area will be ( Surface tension for soap solution = `3xx10^(-3)`N//m )

A

`5.85 xx10^(-7)` joule

B

`7.8xx10^(-7)` joule

C

`1.95xx10^(-7)` joule

D

`3.9xx10^(-7)` joule

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The correct Answer is:

D

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