The work done in blowing a soap bubble of radius $0.2\, m$ is (the surface tension of soap solution being $0.06\, N/m$).
- A$192\pi \times 10^{-4}\,J$
- B$280\pi \times 10^{-4}\,J$
- C$200\pi \times 10^{-3}\,J$
- DNone of these
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