Question

For a simple square lattice, the kinetic energy of a free electron at a corner of the first zone is higher than that of an electron at the
mid point of a side face of zone by a factor of ________

Answer 1

For a simple square lattice, the kinetic energy of a free electron at a corner of the first zone is higher than that of an electron at the midpoint of a side face of zone by a factor of 2.