p-type semiconductor is formed when
(I) As impurity is mixed in Si
(II) Al impurity is mixed in Si
(III) B impurity is mixed in Ge
(IV) P impurity is mixed in Ge
Text Solution
Verified by ExpertsThe correct answer is:
C
For making 
-type semiconductor, we add trivalent impurity. So, B impurity is mixed in Ge and Al impurity is mixed in Si.
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