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Sahay Sir > Question Answers > MTG NEET Physics > Part 1 > Chapter 13 - Fluid Mechanics > The surface tension and vapour pressure of water at 30oC is 7.2×10^−2Nm^−1 and 2.4×10^3 Pa respectively What is the radius of the smallest droplet of water which can be formed without evaporating at 30 degree C ?

The surface tension and vapour pressure of water at 30oC is 7.2×10^−2Nm^−1 and 2.4×10^3 Pa respectively What is the radius of the smallest droplet of water which can be formed without evaporating at 30 degree C ?

A rectangular film of liquid is extended from (4cm×2cm) to (5cm×4cm). If the work done is 3 x 10^{-4}J the value of the surface tension of the liquid is