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A certain number of spherical drops of a...

A certain number of spherical drops of a liquid of radius r coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then

A

Energy =`4VT(1/r - 1/R)` is released

B

Energy =`3VT(1/r + 1/R)` is absorbed

C

Energy =`4VT(1/r - 1/R)` is released

D

Energy is neither released nor absorbed

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