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  4. A long cylindrical glass vessel has a smaller hole of radius 'r' at its bottom. The depth to which the vessel can be lowered vertically in the deep water bath (surface tension T ) without any water entering inside is

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Q. A long cylindrical glass vessel has a smaller hole of radius $'r'$ at its bottom. The depth to which the vessel can be lowered vertically in the deep water bath (surface tension $T$ ) without any water entering inside is

NTA AbhyasNTA Abhyas 2020

Solution:

$\rho gh=\frac{2 T}{r}\Rightarrow h=\frac{2 T}{\rho r g}$