Radius of a soap bubble is increased from R to 2 R work done in this process in terms of surface tension is
Radius of a soap bubble is increased from R to 2 R work done in this process in terms of surface tension is
A. `24piR^(2)S`
B. `48piR^(2)S`
C. `12piR^(2)S`
D. `36piR^(2)S`
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Correct Answer - A
`W = 8piT (R_(2)^(2)-R_(1)^(2)) = 8piS[(2R)^(2)-(R )^(2)] = 24 pi R^(2)S`
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