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Physics-

General

Easy

Question

According to Newton’s law of cooling, the rate of cooling is proportional to $open parentheses increment theta close parentheses to the power of n end exponent$ , where $increment theta$ is the temperature differences between the body and the surroundings and $n$ is equal to

3
2
4
1

The correct answer is: 1

According to Newton’s law of cooling the rate of loss of heat of a body is directly proportional to the difference in temperature of the body, $i e comma$
$negative fraction numerator d Q over denominator d t end fraction proportional to left parenthesis increment theta right parenthesis$ (i)
Given, $negative fraction numerator d Q over denominator d t end fraction proportional to open parentheses increment theta close parentheses to the power of n end exponent$ (ii)
Comparing Eqs. (i) and (ii), we get
$n$ =1

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