Q. The impurity atom added to germanium to make it $N$-type semiconductor is
A) Arsenic
B) Iridium
C) Aluminium
D) Iodine
Explanation
(a) For $N$-type semiconductor, the impurity should be pentavalent
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.