Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoHeat TransferMedium2 min
PhysicsMediumsingle choice
A solid sphere of radius and a hollow sphere of the same material, inner radius and outer radius , are heated to the same temperature and allowed to cool in the same surroundings. Which has the higher rate of cooling?
Options:
Answer:
B
Solution:
The rate of fall of temperature is . Both have the same outer area , but the hollow sphere has less mass, so its temperature falls faster. B.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer
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