Q. To a germanium sample, traces of gallium are added as an impurity. The resultant sample would behave like
A) A conductor
B) A $P$-type semiconductor
C) An $N$-type semiconductor
D) An insulator
Explanation
(b) Gallium is trivalent impurity
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.