Mechanical Properties of Fluids

Question: The surface tension of liquid is $0.5 N/m$. If a film is held on a ring of area $0.02 m^2$, its surface energy is



1) $5 \times 10^{-2}$ joule
2) $2.0 \times 10^{-2}$ joule
3) $4 \times 10^{-4}$ joule
4) $0.8 \times 10^{-1}$ joule
Solution: Explanation: No Explanation
Surface tension surface energy

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