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Physics - Fluid Question with Solution | TestHub

PhysicsFluidSurface TensionEasy2 minPYQ_2020

PhysicsEasysingle choice

In a capillary tube, the water rises to a height of $4 c m$ . If the cross-sectional area of the tube were one-fourth, water would have risen to a height of

Options:

Answer:

Solution:

$h = \frac{2 T \cos θ}{r d g}$

$\Rightarrow r_{1} h_{1} = r_{2} h_{2}$

and $A = 2 π r^{2}$

$\Rightarrow r α \sqrt{A}$

$∴ \sqrt{A_{1}} h_{1} = \sqrt{A_{2}} h_{2}$

$\Rightarrow \sqrt{A} \times 4 = \sqrt{\frac{A}{4}} \times h_{2}$

$\Rightarrow h_{2} = 8 c m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Surface Tension

⏱ 2mℹ️ Source: PYQ_2020

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