Electronic Devices Question 31
Question: The valence of the impurity atom that is to be added to germanium crystal so as to make it a N-type semiconductor, is
[MNR 1993; MP PET 1994; CBSE PMT 1999; AIIMS 2000]
Options:
A) 6
B) 5
C) 4
D) 3
Show Answer
Answer:
Correct Answer: B
Solution:
$ Ge $ + $ \begin{matrix} \text{Pantavalent} \ \text{ impurity} \ \end{matrix} $
$ \begin{aligned} & N\text{-type} \ & \text{semiconductor} \ \end{aligned}$
