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A soap bubble has radius r The work done...

A soap bubble has radius `r` The work done in increasing its radius to three times its original radius, without any rise of temperature, is (Given Surface tension of soap solution is `T`)

A

`12pir^2T`

B

`16pir^2T`

C

`64pir^2T`

D

`48pir^2T`

Text Solution

Verified by Experts

The correct Answer is:
C
`W=[2xx4pi(3r)^2-2xx4pir^2]T=64pir^2T`
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