Answer to Question #88779 in Atomic and Nuclear Physics for Sridhar

Question

E and K represent the energy and wave vector of an electron respectively then the effective number of electrons in a band is proportional to
1)E
2)(dE/dK)
3)(d²E/dK²)
4)(dE/dK)²

Answer 1

in the circumstances the true answer is 2)

$$\frac{dE}{dk}$$