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A soap bubble of diameter a is produced ...

A soap bubble of diameter a is produced using the soap solution of surface tension T. Find the energy required to double the radius of the bubble without change of temperature.

Text Solution

Verified by Experts

The correct Answer is:
`24piR^(2)S`
On doubling the radius,
`DeltaA = 4pi (2R)^(2) - 4 piR^(2) = 12piR^(2)`
but `DeltaW = (2 xx DeltaA) xx S = 24 piR^(2)S`.
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