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A semiconductor is known to have an elec...

A semiconductor is known to have an electron concentration of `5xx10^(12) cm^(-3)` and a hole concentration `8xx10^(13)cm^(-3) ` Is the semi-conductor n-type or p-type? What is the resistivity of the sample, if the electron mobility is `23,000 cm^(2) V^(-1)s^(-1)`? Take charge on electron, `e=1.6xx10^(-19) C`.

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