Ncert Exercises & Solutions

Q. 20 The surface tension and vapour pressure of water at $20 ° C$ are $7.28 \times 10^{- 2} N m^{- 1} a n d 2.33 \times 10^{3}$ Pa respectively. What is the radius of the smallest spherical water droplet which can form without evaporating at $20 ° C$ ?