Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoThermal ExpansionMedium2 minQB
PhysicsMediumstatement
A valley is covered by fog at sunrise. By late morning it has cleared. The main reason is:
Statement I: The air gets warmer, so its saturation vapour pressure rises and droplets evaporate.
Statement II: The droplets freeze and fall.
Options:
Answer:
B
Solution:
Warming raises the amount of vapour the air can hold, so droplets evaporate (with some dispersal by wind). Statement I is true and Statement II false. Correct option: (B).
Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion
⏱ 2mℹ️ Source: QB
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