Question

A liquid of density 'p' and surface tension 'S' rises to a height 'h' in a capillary tube:of diameter D. What is the weight of the liquid in the capillary tube? Take angle of contact to be 0°.

Answer 1

correctness of the formula  h=rpg/2s  

h = 2Scosθ/rρg

S = [M][T]-2

r = [L]

ρ= [M][L]-3

g = [L][T]-2

S/ρrg =[L] =h