Which of the substances A, B or C has the hig | vedclass

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(C) The amount of heat supplied is given by $Q = mc\Delta T$,where $m$ is mass,$c$ is specific heat,and $\Delta T$ is the change in temperature.If the

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$C$

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(C) The amount of heat supplied is given by $Q = mc\Delta T$,where $m$ is mass,$c$ is specific heat,and $\Delta T$ is the change in temperature.If the rate of heat supply is constant,then $P = \frac{Q}{t} = mc \frac{\Delta T}{t}$,which implies $c = \frac{P}{m} \cdot \frac{t}{\Delta T}$.For a constant temperature change $\Delta T$,the specific heat $c$ is directly proportional to the time $t$ taken $(c \propto t)$.By drawing a line parallel to the time axis at a constant temperature,we observe the time taken by each substance to reach that temperature.From the graph,it is clear that $t_C > t_B > t_A$.Since the time taken to reach the same temperature is highest for substance $C$,it follows that $C_C > C_B > C_A$.Therefore,substance $C$ has the highest specific heat.

Which of the substances $A, B$ or $C$ has the highest specific heat $?$ The temperature vs time graph is shown.

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