Question

18. The excess pressure inside a spherical drop of
radius r of a liquid of surface tension T is:
(a) directly proportional to r 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 excess pressure inside a drop =2T/R