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Q.

A p-type semiconductor is

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a

Positively charged

b

Uncharged

c

Uncharged at 0K but charged at higher temperatures

d

Negatively charged

answer is C.

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Detailed Solution

 By doping, the band gap reduce from 1eV to 0.3 to 0.7 eV & electron can achieve this energy (0.3eV to 0.7eV) at room temperature & reach in C.B (conduction band).

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