Surface Tension...

When two soap bubbles of radius r₁ and r₂ (r₂>r₁) coalesce, the radius of curvature of the common surface is

The excess of pressure inside a soap bubble than that of the outer pressure is

The pressure of air in a soap bubble of 0.7cm diameter is 8 mm of water above the pressure outside. The surface tension of the soap solution is

The pressure inside two soap bubbles are 1.01 and 1.02 atmospheres. The ratio between their volumes is

The radii of two soap bubbles are r₁ and r₂ . In isothermal conditions, two meet together in a vacuum. Then the radius of the resultant bubble is given by

The excess pressure of one soap bubble is four times more than the other. Then the ratio of the volume of the first bubble to another one is 

There are two liquid drops of different radii. The excess pressure inside over the outside is:-

Two soap bubbles have different radii but their surface tension is the same. Mark the correct statement

There is a horizontal film of soap solution. On it, a thread is placed in the form of a loop. The film is pierced inside the loop and the thread becomes a circular loop of radius R. If the surface tension of the loop be T, then what will be the tension in the thread?

A large number of water drops each of radius r combines to have a drop of radius R. If the surface tension is T and the mechanical equivalent of heat is J, then the rise in temperature will be