Q. In a $P$-type semi-conductor, germanium is dopped with
A) Gallium
B) Boron
C) Aluminium
D) All of these
Explanation
(d) Gallium, boron and aluminum are trivalent
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.