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PhysicsFluidSurface TensionEasy2 minPYQ_2020

PhysicsEasysingle choice

A capillary tube of the radius $r$ is immersed in water and water rise in it to a height $H$ . Mass of water in the capillary tube is $m$ . If the capillary of radius $2 r$ is taken and dipped in water, the mass of water that will rise in the capillary tube will be

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Answer:

Solution:

$\frac{m g}{A} = \frac{2 T}{R}$

$\Rightarrow \frac{m g}{π r^{2}} = \frac{2 T c o s θ}{r}$

$\Rightarrow \frac{m}{r} = \frac{2 π T c o s θ}{g} = c o n s t a n t$

$\Rightarrow \frac{m}{r} = \frac{m'}{2 r}$

$\Rightarrow m^{'} = 2 m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: PYQ_2020

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