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The work done to blow a bubble is W. The...

The work done to blow a bubble is W. The extra work to be done to double its radius is

A

W

B

2W

C

3W

D

4W

Text Solution

Verified by Experts

The correct Answer is:
C
`W_(1)=8piR^(2)T," "W_(2)=32piR^(2)T,`
`DeltaW=W_(2)-W_(1)=24piR^(2)T rArr DeltaW=3W`
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