Work done in increasing the size of a so...

Work done in increasing the size of a soap bubble from a radius of `3 cm` to `5 cm` is nearly. (surface tension of soap solution `= 0.3 Nm^(-1))`

A

`4pi` mJ

B

`0.2pi` mJ

C

`2pi` mJ

D

`0.4pi` mJ

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The correct Answer is:

D

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