Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoHeat TransferMedium2 min
PhysicsMediumsingle choice
Ice starts forming on the surface of a lake and takes 8 hours to form a layer 1 cm thick. How much time will it take to increase the thickness of the layer to 2 cm?
Options:
Answer:
D
Solution:
The time to freeze a layer of thickness goes as . So 1 cm takes 8 h, and 2 cm takes 32 h in all. The extra 1 cm takes 24 h, which is more than 16 hours. D.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer
⏱ 2m
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