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A soap bubble has radius r. The surface ...

A soap bubble has radius r. The surface tension of the soap film is T. The energy needed to double the diameter of the bubble without the change of temperature is

A

`4pir^2T`

B

`2pir^2T`

C

`12pir^2T`

D

`24pir^2T`

Text Solution

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The correct Answer is:
D
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