Two circular discs A and ,B with equal radii are blackened. They are heated to same temperature and are cooled under identical conditions. What inference do your draw from their cooling curves?

Question

Infinity Learn · Accepted Answer

When a body cools by radiation, the rate of cooling is given by:                  dθdt $$=$$ $$-eA$$σ$$ms($$θ$$4-$$θ$$40)-ve$$ sign shows that temperafure decreases, i.e., the body cools, s is the specific heat of material and θ$$0$$ is the surrounding temperatureor dθdt∝ $$1si$$.e., rate of $$cooling(R$$ $$=$$ dθ$$dt)$$ is inversely proportional to the specific heat of material. For a, rate of cooling is large, therefore, specific heat of A is smaller.

Two circular discs A and ,B with equal radii are blackened. They are heated to same temperature and are cooled under identical conditions. What inference do your draw from their cooling curves?

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