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

Work done in increasing the size of a soap bubble from a radius of 3cm to 5cm is nearly (Surface tension of soap solution `=0.03Nm^-1`)

A

`2pimJ`

B

`0.4pimJ`

C

`4pimJ`

D

`0.2pimJ`

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The correct Answer is:

B

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