Water in a porous earthen pitcher is much cooler than the air on a hot dry day but not so on a humid rainy day. The reason is:
Statement I: Water seeping through the pores evaporates and cools the pitcher, but in humid air evaporation is negligible.
Statement II: The pitcher is a better conductor than metal.

Question

Water in a porous earthen pitcher is much cooler than the air on a hot dry day but not so on a humid rainy day. The reason is:

Statement I: Water seeping through the pores evaporates and cools the pitcher, but in humid air evaporation is negligible.

Statement II: The pitcher is a better conductor than metal.

TestHub · Accepted Answer

Cooling comes from latent heat taken during evaporation of seeping water. In humid air the evaporation rate is nearly zero. Statement I is true and Statement II false. Correct option: (B).

Physics - Heat & Thermo Question with Solution | TestHub

Options:

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