Question

On increasing the temperature, the increase in conductivity of intrinsic semiconductor is due to
(A) Decrease in band gap between valence band and conduction band
(B) Increase in electrons in conduction band
(C) Increase in negative charged electrons than positive holes in valence band
(D) Increase in electrons in valence band
Answer​

Answer 1

Answer: Generally conductivity of intrinsic conductors can be increased by increasing the temperature as the increase in temperature pushes a greater proportion of electrons from valence band to conduction band which increases the conductivity.

Explanation:  If it's correct then plzzz mark it as the Brainliest

Answer 2

Answer :

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• In case of semiconductors, the gap between the valence band and conduction band is small, some electrons may jump to conduction band and show some conductivity.
• Electrical conductivity of semiconductors increase with rise in temperature, since more electrons can jump to the conduction band.

Hence, (B) is the correct answer.

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