At what temperature T is the specific heat capacity due to free electron gas in copper equal to 10% of that due to lattice vibrations {Given for copper Fermi energy EF = 7.06 eV. Boltzmann constant k = 8.62 × 10-5 eV/K and T >> θD (Debye temperature)}?
1
4.98 × 103 K
2
3.5 × 103 K
3
300 K
4
Insufficient information as Fermi temperature TF for copper is not given