Electronic Devices Question 27
Question: A P-type semiconductor can be obtained by adding
[NCERT 1979; BIT 1988; MP PMT 1987; 90]
Options:
A) Arsenic to pure silicon
B) Gallium to pure silicon
C) Antimony to pure germanium
D) Phosphorous to pure germanium
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Answer:
Correct Answer: B
Solution:
Ga has a valancy of 3.