A capillary tube is lowered into a vessel with a liquid whose vapour pressure may be neglected. The density of the liquid is rho. The vessel and the tubes are in a vacuum under the bell of air pump (fig). Find the pressure inside the liquid in the capilary tube at a height h above the level of the liquid in the vessel

A capillary tube is lowered into a vessel with a liquid whose vapour p

1.	A capillary tube is lowered into a vessel with a liquid whose vapour pressure may be neglected. The density of the liquid is rho. The vessel and the tubes are in a vacuum under the bell of air pump (fig). Find the pressure inside the liquid in the capilary tube at a height h above the level of the liquid in the vessel
Answer» SOLUTION :`H = (2T)/(r_(1)rhog) - (2T)/(r_(2)rhog)` `1.25 = (2T)/(rhog)[(2)/(0.1)-(2)/(0.2)]` `rho = (2 xx 49 xx 2)/(0.2 xx 980 xx 1.25)` `rho = (1)/(1.25) = 0.8 gm//cm^(3)`