# NEET Physics Mechanical Properties of Fluids Questions Solved

The surface tension of a liquid is 5 N/m. If a thin film of the area 0.02 ${\mathrm{m}}^{2}$ is formed on a loop, then its surface energy will be

(a)               (b)

(c)             (d)

(c) $\mathrm{W}=\mathrm{T}×∆\mathrm{A}=5×2×\left(0.02\right)$  (Film has two free surfaces)

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