What will be the work done in blowing a ...

What will be the work done in blowing a soap bubble of radius 2 cm , the surface tension of the soap solution is 20 dyne/cm at constant temperature ?

A

`320 pi ` erg

B

` 640 pi ` erg

C

`1240 pi ` erg

D

`160 pi ` erg

Text Solution

Verified by Experts

The correct Answer is:

B

`domega = 2T A`

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