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?

A. There will be change in the size of the bubbles
B. The bubbles will become of equal size
C. The bubbles will become of equal size
D. The bubbles will become of equal size

Answer 1

Correct Answer - C
The air pressure is greater inside the smaller bubble `(4T//r)`.
Hence air flows from the smaller to the larger bubble.