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The conductivity of intrinsic semiconductor is given by

eni(μp - μn)
eni(μp + μn)
ni(μp + μn)
ni(μpμn)

Correct Answer: eni(μp + μn)

Explanation:

For intrinsic semiconductor,

Conductivity = (Electron charge) x (Number of charge carriers) x (Sum of mobilities of holes and electrons).

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