Notes

Applications of Surface Tension…

Applications of Surface Tension – As Every system tends to have minimum potential energy, the surface of a liquid too tends to have minimum surface area. As sphere has the minimum surface area for a given volume, drops and bubbles tend to have spherical shape.
Excess pressure for liquid drop(△p)_d = 2S/r
Excess pressure for soap bubble (△p)_b = 4S/r