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A Ge specimen is doped with Al. The conc...

A Ge specimen is doped with Al. The concentration of acceptor atoms is `10^(21)"atoms/m"^(3)`. Given that the intrinsic concentration of electron hole pairs is `10^(19)//m^(3)`, the concentration of electrons in the specimen is …….

A

`10^(17) m^(-3)`

B

`10^(15) m^(-3)`

C

`10^4 m^(-3)`

D

`10^2 m^(-3)`

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