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In a sample of semi conductor mobilities...

In a sample of semi conductor mobilities of electrons and holes are `24 xx 10^3 cm^2 V^-1 S^-1` and `0.2 xx 10^3 cm^2 V^-1 S^-1` respectively. If the density of electrons is `0.8 xx 10^14 cm^-3` and that of holes is `0.4 xx 10^14 cm^-3. Find the nature of semi-conductor and its conductivity.

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