By how much will the surface of a liquid be depressed in a glass tube of radius 0.2 mm if the angle of contact of the liquid is `135^(@)` and the surface tension is `0.547 Nm^(1)`? Density of the liquid is `13.5xx10^(3) kg m^(-3)`. [ Hint: Neglecting the liquid in the meniscus we have for equilibrium `pi r_(2)h rho g=2pirT cos theta,h=(2T cos theta)/(rho g r)`]

By how much will the surface of a liquid be depressed in a glass tube

1.	By how much will the surface of a liquid be depressed in a glass tube of radius 0.2 mm if the angle of contact of the liquid is `135^(@)` and the surface tension is `0.547 Nm^(1)`? Density of the liquid is `13.5xx10^(3) kg m^(-3)`. [ Hint: Neglecting the liquid in the meniscus we have for equilibrium `pi r_(2)h rho g=2pirT cos theta,h=(2T cos theta)/(rho g r)`]
Answer» Correct Answer - `2.92xx10^(-2)m`

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