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An n - type semiconductor has resistivit...

An n - type semiconductor has resistivity `0.1Omegam` . The number of donor atoms which must be added to achieve this is ( `mu=0.05 m^2V^(-1)s^(-1)` ) :

A

`1.25xx10^(17)`

B

`1.25xx10^(23)`

C

`1.25xx10^(21)`

D

`1.25xx10^(22)`.

Text Solution

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The correct Answer is:
C
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