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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediummultiple choice

Two spheres $A$ and $B$ have the same radius but the heat capacity of $A$ is greater than that of $B$ . The surfaces of both are painted black. They are heated to the same temperature and allowed to cool. Then:

Options:(select one or more)

Answer:

C, D

Solution:

Both radiate heat at the same rate at a given temperature because the surfaces are the same. The rate of cooling is $\frac{rate of heat loss}{heat capacity}$ , so $B$ cools faster, and the ratio is the constant $\frac{C _{B}}{C _{A}}$ . C and D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

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