To a germanium crystal equal number of aluminums and indium atoms are added. Then
A
it remains an intrinsic semiconductor
B
it becomes a 
-type semiconductor
-type semiconductor
C
it becomes a p-type semiconductor
D
it becomes an insulator.
Text Solution
Verified by ExpertsThe correct answer is:
C
If trivalent impurity is mixed with pure germanium crystal, the crystal so obtained is called p-type semiconductor. Here, aluminium and indium atoms are trivalent impurity atoms
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