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Physics - Fluid Question with Solution | TestHub

PhysicsFluidBernoulli's theorem and applicationsMedium2 minPYQ_2019

PhysicsMediumsingle choice

A metal sphere of radius ‘ $R$ ’ and density ‘ $Q_{1}$ ’ is dropped in a liquid of density ‘ $σ$ ’ moves with terminal velocity ‘ $V$ ’. Another metal sphere of same radius and density ‘ $Q_{2}$ ’ is dropped in the same liquid, its terminal velocity will be

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Answer:

Solution:

$V_{T} = \frac{2}{9} \frac{r^{2} (δ - σ) . g}{n}$
$\frac{V}{V_{T}} = \frac{\frac{2}{9} R^{2} \frac{(Q_{1} - σ) .}{n} g}{\frac{2}{9} R^{2} (Q_{2} - σ) . g} \Rightarrow V_{T} = \frac{(Q_{2} - σ) . V}{(Q_{1} - σ)}$

Stream:MHT_CETSubject:PhysicsTopic:FluidSubtopic:Bernoulli's theorem and applications

⏱ 2mℹ️ Source: PYQ_2019

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