Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumstatement
Wet clothes dry faster on a winter day than on a summer day. Explain. Evaluate the following statements.
Statement I: It can happen on a dry, windy winter day compared with a humid, still summer day; the claim is not universal.
Statement II: Winter air always holds more water vapour at saturation than summer air.
Options:
Answer:
B
Solution:
As stated, this is only true under special conditions: a dry (low relative humidity), windy winter day can dry clothes faster than a humid, still summer day, because the evaporation rate depends on the humidity deficit of the air and on air movement, not on temperature alone. At equal humidity and wind, warmer air dries faster. Statement I is true and Statement II false. Correct option: (B).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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