When n type semiconductor is heated (a) number of electrons increases while that of holes decreases (b) number of holes increases while that of electrons decreases (c) number of electrons and holes remain same (d) number of electrons and holes increases equally

Answer: (d). Heating breaks covalent bonds and creates electron-hole pairs. Each broken bond adds one free electron and one hole, so both increase by the same number. So the answer is (d) number of electrons and holes increases equally.

When n type semiconductor is heated | NEET 1989 (AIPMT)

Q66NEET 1989 · AIPMTMedium

Intrinsic & Extrinsic Semiconductors

When n type semiconductor is heated

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Answer: (d)

Heating breaks covalent bonds and creates electron-hole pairs.
Each broken bond adds one free electron and one hole, so both increase by the same number.
So the answer is (d) number of electrons and holes increases equally.

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Intrinsic & Extrinsic Semiconductors question from NEET 1989 (AIPMT)

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