Published by:
CGP EDU Academic Team
Published on: September 12, 2026
The surface tension and vapour pressure of water at 
is 
and 
Pa respectively. The radius of the smallest spherical water droplet which can form without evaporating at 25°C is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Here, 
The drop will evaporate if the water pressure is greater than the vapour pressure P.
As 
,Where R is the radius of drop
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