34. In an intrinsic semiconductor we doped boron with
density 1.5 x1018 atoms/cm and posphorus with
density 1018 atoms/cm then which type of
semiconductor forms and what is the charge carrier
density :-
(1) P-type, 0.5 x 1018 cm3
(2) N-type, 0.5 x 1018 cm3
(3) P-type, 2.5 x 1018 cm 3
(4) N-type, 2.8 x 1018 cm3
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