Calculate the excess of pressure inside an air bubble of radius `1 mm` formed just below the free surface of water.Given surface tension of water `72×10^(-3) Nm^(-1)`

Obtain an expression for excess of pressure inside a drop of radius r and surface tension S.

What is the pressure inside the drop of mercury of radius 3.00mm at room temperature?Surface tension of mercury at that temperature (20°C) is 4.65×10^(-1) Nm^(-1) .The atmospheric pressure is 1.01×10^5 Pa .Also give the excess pressure inside the drop.

Surface tension changes with temperature. Calculate the work done in breaking water drop of radius 1 mm to 1000 droplets. Surface tension of water = 72 x 10^(-3) N/m .

When a capillary tube of radius r is dipped in water,the water rises through it up to a height h. To what height will water rise in a glass tube with a bore of radius 0.1 mm (take the angle of contact of Glass with 0° ,surface tension is S= 0.0728 N/m )