Download the app

Surface tension and surface energy

Question

Two capillary tubes of same diameter are put vertically in each of two liquids. Whose relative densities are 0.8 and 0.6 and surface tensions are 60 and 50 dyne/cm respectively. Ratio of heights of liquids in two tubes are  k:10. Find k. (Contact angles for both capillary is same)

Moderate
Solution

ρgh=2Tcosθrh1h2=T1T2ρ2ρ1=60×0.650×0.8=3.64=910=K10h1h2=910=k10k=9



Talk to our academic expert!

+91

Are you a Sri Chaitanya student?



Similar Questions

A drop of liquid of density ρ is floating half-immersed in a liquid of density d. If σ is the surface tension, the diameter of the drop of the liquid is


phone icon
whats app icon