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Physics - Fluid Question with Solution | TestHub

PhysicsFluidViscosityMedium2 minQB

PhysicsMediumsingle choice

Two large vertical parallel plates separated by a gap of d have a highly viscous liquid of density $ρ$ and viscosity coefficient $η$ , flowing steadily under gravity in the gap. The velocity gradient of flow near plates surface is

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Answer:

Solution:

$F = η A \frac{d v}{d x}$
(for one surface)
Now
$2 η A \frac{d v}{d x} = m g = ρ A ℓ g \Rightarrow \frac{d v}{d x} = \frac{ρ ℓ g}{2 η}$

Stream:JEESubject:PhysicsTopic:FluidSubtopic:Viscosity

⏱ 2mℹ️ Source: QB

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