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Physics - Fluid Question with Solution | TestHub

PhysicsFluidViscosityEasy2 minPYQ_2020

PhysicsEasysingle choice

A raindrop of radius 0.3 mm has a terminal velocity in air $= 1 m s^{- 1}$ . The viscous force on it is (Given the viscosity of the air is $18 \times 10^{- 5} g {cm}^{- 1} s^{- 1}$ )

Options:

Answer:

Solution:

$F = 6 π η r v$

$= 6 \times 3.14 \times (18 \times 10^{- 5}) \times 0.03 \times 100$

$= 101.73 \times 10^{- 4} d y n e$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Viscosity

⏱ 2mℹ️ Source: PYQ_2020

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