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Physics - Fluid Question with Solution | TestHub

PhysicsFluidSurface TensionMedium2 minQB

PhysicsMediumsingle choice

A small air bubble of radius r is found to be formed at a depth H from the open surface of the liquid contained in a beaker. If S is the surface tension, $ρ$ is the density of liquid and $p_{0}$ is the atmospheric pressure, then the pressure inside the bubble is :-

Options:

Answer:

Solution:

An air bubble inside a liquid has a single free surface, so the excess pressure is

$Δ P = \frac{2 S}{r}$

Adding atmospheric pressure and the hydrostatic pressure at depth H:

$P_{inside} = p_{0} + ρ g H + \frac{2 S}{r}$

. Answer D.

Stream:JEESubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: QB

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