Which of the following statements is $NOT$ true?

  • A
    Specific heat capacity is dependent on the nature of the substance but independent of its quantity.
  • B
    Specific heat capacity depends on temperature.
  • C
    Specific heat capacity of water does not vary with temperature.
  • D
    The $SI$ unit of specific heat capacity is $J \cdot K^{-1} \cdot kg^{-1}$.

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$A$ small electric heater is used to heat $200 \,g$ of water. The time required to bring all this water from $40^{\circ} C$ to $100^{\circ} C$ is $200 \,s$. If the specific heat of the water is $4200 \,J \,kg^{-1} \,K^{-1}$, then the power supplied by the heater is: (in $\,W$)

Give the $SI$ unit of heat capacity. Write the dimensional formula of heat capacity.

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