Physics - Heat & Thermo Question with Solution | TestHub
PhysicsHeat & ThermoHeat TransferMedium2 min
PhysicsMediumsingle choice
A sphere, a cube and a circular disc (thin) of the same material and the same mass are heated to the same temperature and placed in the same surroundings. Which cools fastest and which slowest?
Options:
Answer:
B
Solution:
For a given mass and volume, the rate of cooling is proportional to the surface area. A sphere has the least area and the thin disc the most, so the disc cools fastest and the sphere slowest. B.
Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer
⏱ 2m
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