Semiconducting Devices Question 122

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

Show Answer

Answer:

Correct Answer: B

Solution:

Ga has a valancy of 3.



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