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Physics - Fluid Question with Solution | TestHub

PhysicsFluidSurface TensionEasy2 minPYQ_2020

PhysicsEasysingle choice

The work done to get $n$ smaller equal size spherical drops from a bigger size spherical drop of water is proportional to

Options:

Answer:

Solution:

$\frac{4}{3} π R^{3} = n \times \frac{4}{3} π r^{3}$ or $r = \frac{R}{n^{\frac{1}{3}}}$

Now work done = increase in area $\times$ surface tension

$W = (4 π r^{2} n - 4 π R^{2}) \times T$

$W = 4 π (\frac{R^{2}}{n^{\frac{2}{3}}} n - R^{2}) \times T$

$W \propto (n^{\frac{1}{3}} - 1)$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: PYQ_2020

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