Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
The impurity atoms with pure silicon should be doped to make a n-type semiconductor are those (1) phosphorus (2) antimany (3) boron (4) aluminiumA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
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