Published by:
CGP EDU Academic Team
Published on: September 12, 2026
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 you draw from their cooling curves?
Text Solution
Verified by ExpertsThe correct answer is:
B
According to Newton's law of cooling rate of cooling is given by
where c is specific heat of material.
Or 
i.e., rate of cooling varies inversely as specific heat, from the graph, for A rate of cooling is larger.
Therefore, specific heat of A is smaller.
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