Question

If two soap bubbles of different radii are connected by a tube,

• A. Air flows from the bigger bubble to the smaller bubble till the sizes become equal
• B. Air flows from bigger bubble to the smaller bubble till the sizes air interchanged
• C. Air flows from the smaller bubble to the bigger
• D. There is no flow of air

Answer 1

Answer: (C)

Air flows from the smaller bubble to the bigger

Answer 2

P = 2T/R ; R is less for smaller bubble, P is more for larger bubble, R is more, P is less. Since air flows from higher pressure to lower pressure therefore the air shall flow from smaller bubble to larger bubble.