Temperature Dependence of Thermal Conductivity
Two metal rods, A and B, have identical dimensions. When the temperature is increased from 20°C to 80°C, the thermal conductivity of rod A decreases, while that of rod B increases. Which of the following best explains this difference in behavior?
A
Rod B has a higher melting point than rod A
B
Temperature cannot affect intrinsic thermal conductivity
C
Rod A’s specific heat must be greater than rod B’s
D
Different dominant heat transfer mechanisms at atomic level
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