Question

Two soap bubbles A and B of different diameters are blown at the two ends of a bent tube .By opening the stopcock S, the two bubbles are put in communication. What will happen?

Answer 1

The excess pressure inside a soap bubble is inversely proportional to its radius. Hence the pressure inside A is greater than the pressure inside (b) Air will flow from A to (b) therefore A will become smaller and B will become larger