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Questions  

If NP and Ne be the numbers  of holes and conduction electrons in an extrinsic semiconductor, then

a
Np> Ne
b
Np= Ne
c
Np< Ne
d
Np> Ne  or Np< Ne depending on the nature of impurity

detailed solution

Correct option is D

Extrinsic S.C.   → P-Type( NP>> Ne)                                  → N-Type (Ne >>NP)

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