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Q.

Pick the wrong statement

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a

In  P-type semi conductor   crystal, each impurity  atom  provides a hole to crystal structure and becomes negative ion

b

In  P-type semi conductors  the average energy  of holes  in valance band is less than  that of electrons  in  conduction band

c

The fermi  energy level in p type  semi conductors  is just above the valance band

d

The  relation between the electrons density ne and. Hole density  nh are  related as nenh=ni2 where ni is intrinsic charge carrier  density

answer is B.

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Detailed Solution

For P-type, the average  energy of holes in valance band is more than that of electrons in conduction band.
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