Work done in increasing the size of a soap bubble from a radius of $3\, cm$ to $5\, cm$ is (Surface tension of soap solution $= 0.03\, Nm^{-1}$)
- A$1.92\, \pi\, mJ$
- B$0.384\, \pi\, mJ$
- C$3.84\, \pi\, mJ$
- D$0.192\, \pi\, mJ$
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