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A soap bubble of radius 1/sqrtpi cm is e...

A soap bubble of radius `1/sqrtpi cm` is expanded to have double the radius. If S.T. is 30 dyne/cm then the work done is

A

180 ergs

B

360 ergs

C

720 ergs

D

960 ergs

Text Solution

Verified by Experts

The correct Answer is:
C
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