A glass tube 80cm long and open at both ends is half

Last updated: 6/26/2023

A glass tube 80cm long and open at both ends is half immersed in mercury Then the top of the tube is close and it is taken out of the mercury A column of mercury 20cm long then remains in the tube The atmospher pressure in cm of Hg is 1 50 2 60 3 70 4 80