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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

You are given two spheres of the same material and radii 10 cm and 20 cm. They are heated to the same temperature and placed in the same environment. The ratio of their rates of cooling will be:

Options:

Answer:

Solution:

The rate of fall of temperature $\propto \frac{A}{m} \propto \frac{1}{r}$ . The ratio is $\frac{\frac{1}{10}}{\frac{1}{20}} = 2 : 1$ . B.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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