Question

When P. in Kronig - Penny model, is very large
(a) forbidden gap increases and allowed energy levels also increase in band
(b) forbidden gap decreases and allowed energy levels also increase in band
(c) forbidden gap increases and allowed energy levels also decrease in band
(d) forbidden gap decreases and allowed energy levels also decrease in band​

Answer 1

Answer:(c). This model is called Kronig-Penney model of potentials. images ... The energies and wave functions of electrons associated with this model can be ... for -b<x<0. ... the allowed energy states for a electron increases there by increasing the band ... in the decrease of allowed energy and increase of forbidden energy gap.

Explanation: