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Physics - Fluid Question with Solution | TestHub

PhysicsFluidSurface TensionEasy2 minPYQ_2020

PhysicsEasysingle choice

A coaxial cylinder made of glass is immersed in a liquid of surface tension $S$ . The radius of the inner and outer surface of the cylinder are $R_{1}$ and $R_{2}$ respectively. Height till which liquid will rise is (Density of liquid is $ρ$ )

Options:

Answer:

Solution:

Net upward force

$= 2 π R_{2} S + 2 π R_{1} S c o n t a c t a n g l e = 0 °$

$∴$ Capillary rise is given by

$h = \frac{2 π S (R_{1} + R_{2})}{π (R_{2}^{2} - R_{1}^{2}) ρ g}$

$= \frac{2 S}{(R_{2} - R_{1}) ρ g}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: PYQ_2020

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