Question

18. The excess pressure inside a spherical drop of
radius r of a liquid of surface tension Tis:
(a) directly proportional tor and inversely
proportional to T
(b) directly proportional to T and inversely
proportional to r
(c) inversely proportional to T and inversely
proportional to r
(d) None of these​

Answer 1

Answer:

Option (b)

Explanation:

Excess Pressure inside a drop = 2T/R

so it increases with increase in the surface tension and decreases with increase in the radius.