Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoHeat TransferMedium2 min
PhysicsMediummultiple choice
A solid copper sphere and a hollow copper sphere have the same outer radius and the same surface finish. Both are at the same temperature in the same surroundings. Which statements are correct at that instant?
Options:(select one or more)
Answer:
A, B, C
Solution:
Same outer area, emissivity and temperature give equal emitted and absorbed power (A, B). The rate of fall of temperature is and the solid sphere has the larger mass, so it cools more slowly (C). D is false.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer
⏱ 2m
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