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A spherical drop of oil of radius 1 cm i...

A spherical drop of oil of radius 1 cm is broken into 1000 droplets of equal radii. If the surface tension of oil is 50 dyne/cm, the work done is

A

`18pi erg`

B

`180pi erg`

C

`1800pi erg`

D

`18000pi erg`

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