Physics - Fluid Question with Solution | TestHub

PhysicsFluidSurface TensionEasy2 minPYQ_2020
PhysicsEasysingle choice

An open capillary tube is lowered in a vessel with mercury. The difference between the levels of the mercury in the vessel and in the capillary tube isΔh= 4.6 mm. The radius of curvature of the mercury meniscus in the capillary tube will be (surface tension of mercury is0.46 N m-1of mercury is13.6 g cm-3)

Options:

Answer:
B
Solution:

Δh=2Scos⁡θrρg=2SRρg

⇒    R=2SΔhρg

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Surface Tension
⏱ 2mℹ️ Source: PYQ_2020

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