QUESTION 49Consider the energy E in the first Brillouin zone as a function of the magnitude of the wave vector k for a crystal of lattice constant a. Then:OA. The slope of E versus k is proportional to the group velocityOB.OC.The slope of E versus k has its maximum value at |k|=The plot of E versus k will be parabolic in the internalD.The slope of E versus k is non-zero for all k the intervalTCl=<<|| <= 12a

The Brillouin zone is a very important concept in solid state physics; it plays a major role in the…

Answered: Consider the energy E in the first…

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