Fluid Mechanics Viscosity Question 364

Question: If two soap bubbles of equal radii r coalesce then the radius of curvature of interface between two bubbles will be[J&K CET 2005]

Options:

A) r

B) 0

C) Infinity

D)1/2r

Show Answer

Answer:

Correct Answer: C

Solution:

$ r=\frac{r_{1}r_{2}}{r_{2}-r_{1}}=\infty \ \sin ce\ r_{1}=r_{2} $