Question

Two unequal soap bubbles are formed one on each side of a tube closed in the middle by a tap What happens when the tap is opened to put the two bubbles in communication?

• A. No air passes in any direction as the pressures are the same on two sides of the tap
• B. Larger bubble shrinks and smaller bubble increases in size till they become equal in size
• C. Smaller bubble gradually collapses and the bigger one increases in size
• D. None of the above

Answer 1

The correct option is C Smaller bubble gradually collapses and the bigger one increases in size

As the flow takes place from the high pressure region to the lower pressure region, so the soap bubble having more volume exerts less pressure and the soap bubble having less volume will exert more pressure.

So, the smaller bubble gradually collapses and the bigger one increases in size.