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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 andn is equal to

  1. 3    
  2. 2    
  3. 4    
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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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