question_answer

For a small temperature difference between the body and the surroundings the relation between the rate of loss heat R and the temperature of the body is depicted by

A)                                                                           

B)                          

C)                           

D)           

Correct Answer: C

Solution :

                   Rate of loss of heat (R) µ temperature difference                    Þ\[R\propto (\theta -{{\theta }_{0}})\]Þ\[R=\ k(\theta -{{\theta }_{0}})=k\theta -k{{\theta }_{0}}\](k= constant)                    on comparing it with \[y=mx+c\] it is observed that, the graph between R and q will be straight line with slope =k and intercept \[=-k{{\theta }_{0}}\]