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Several spherical drops of a liquid each...

Several spherical drops of a liquid each of radius r coalesce to form a single drop of radius R. If T is the surface tension, then the energy liberated will be -

A

`4piR^(3)T((1)/r-(1)/(R))`

B

`2piR^(3)T((1)/r-(1)/(R))`

C

`(4)/(3)pir^(2)T((1)/(r)-(1)/(R))`

D

`2piRT((1)/(R)-(1)/(r))`

Text Solution

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The correct Answer is:
A
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