Consider the following statements.(A) In an intrinsic semiconductor number of holes and electrons are same.(B) In an p type extrinsic semiconductor number of holes doesn't depend on doping concentrations.
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a
Both (A) and (B) are true.
b
(A) is true but (B) is false.
c
(A) is false but (B) is true.
d
Both (A) and (B) are false.
answer is B.
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Detailed Solution
In intrinsic semiconductor holes and electrons have same number density. In an extrinsic semiconductor majority charge carriers concentration depends on doping concentration.
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Consider the following statements.(A) In an intrinsic semiconductor number of holes and electrons are same.(B) In an p type extrinsic semiconductor number of holes doesn't depend on doping concentrations.