Q. The energy gap between conduction band and the valence band is of the order of 0.7 eV. Then it is
A) An insulator
B) A conductor
C) A semiconductor
D) An alloy
Explanation
(c) It is a semiconductor,
For Ge, $\mathrm{\Delta}E_{g} = 0.72$ eV
For Si, $\mathrm{\Delta}E_{g} = 1.1$ eV
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.