Assertion :A pure semiconductor has negative temperature coefficient of resistance. Reason: In a semiconductor on raising the temperature, more charge carriers are released, conductance increases and resistance decreases.

Assertion is true, Reason is true; Reason is a correct explanation for Assertion

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Assertion is true, Reason is true; Reason is not a correct explanation for Assertion

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Assertion is true, Reason is false

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Assertion is false, Reason is true

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Solution

The correct option is A Assertion is true, Reason is true; Reason is a correct explanation for Assertion
In semiconductors, by increasing temperature, covalent bond breaks and conduction hole and electrons increase.

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Assertion :A pure semiconductor has negative temperature coefficient of resistance. Reason: In a semiconductor on raising the temperature, more charge carriers are released, conductance increases and resistance decreases.

The correct option is A Assertion is true, Reason is true; Reason is a correct explanation for AssertionIn semiconductors, by increasing temperature, covalent bond breaks and conduction hole and electrons increase.

The correct option is A Assertion is true, Reason is true; Reason is a correct explanation for Assertion
In semiconductors, by increasing temperature, covalent bond breaks and conduction hole and electrons increase.