State Dulong and Petit's law?

cbse
thermalpropmatter

#1

For crystalline solids, the specific heat capacity is 6 cal ${{mole}^{-1}}$${{K}^{-1}}$ or 25 J ${{mole}^{-1}}$${{K}^{-1}}$ or 3 R at room temperature specific heat capacity decreases rapidly at low temperature.