Fluid Mechanics Viscosity Question 246

Question: Two bubbles A and B $ (A>B) $ are joined through a narrow tube. Then [UPSEAT 2001; Kerala (Med.) 2002]

Options:

A) The size of A will increase

B) The size of B will increase

C) The size of B will increase until the pressure equals

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

$ r_{A}>r_{B} $ and $ P\propto \frac{1}{r} $ so $ P_{A}<P_{B} $ So air will flow from B to A i.e. size of A will increase.