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Question

Assertion :According to Newton's law of cooling the rate of loss of heat ,dQ/dt of the body is directly proportional to the difference of temperature. Reason: This law holds for all type of temperature differences

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is C Assertion is correct but Reason is incorrect
According to the Newton's law of cooling, the rate of the heat loss is directly proportional to the difference of temperature.
But the Newton's law of cooling, holds good only for small difference of temperature.
Therefore, Assertion is correct but the reason is wrong.

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