Physics - Heat & Thermo Question with Solution | TestHub

Yes. Molecules with higher-than-average kinetic energy at the surface escape. The average kinetic energy of those left behind falls, so the liquid cools. The escaping molecules carry away the latent heat of vaporization, which the liquid supplies from its own internal energy unless heat flows in from outside. Both are true. The Reason gives the physical cause of the Assertion. Correct option: (A).