Q. In a semiconductor, the concentration of electrons is $8 \times 10^{14}/cm^{3}$ and that of the holes is $5 \times 10^{12}cm^{3}$. The semiconductor is
A) $P$-type
B) $N$-type
C) Intrinsic
D) $PNP$-type
Explanation
(b) Since $n_{e} > n_{h};$ the semiconductor is $N$-type
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.