Surface tension of a soap bubble is 2.0 x 10 -2 Mm -1 . Work done to increase the radius of soap bubble from 3.5 cm to 7 cm will be: [Take 
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Text Solution
Verified by ExpertsThe correct answer is:
C
Surface area of soap bubble = 2 x4 
R 2
Work done = change in surface energy x T s
= T s x 8 
x 
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