Statement-1: Electrical conductivity of semiconductors increases with increasing temperature.
Statement-2: With increase in temperature, large number of electrons from the valence band can jump to the conduction band

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Statement-1 is True , Statement-2 is True; Statement-2 is a correct explanation of Statement-1

Statement-1 is True,Statement-2 is True;Statement-2 is NOT a correct explanation of Statement-1

Statement-1 is True,Statement-2 is False

Statement-1 is False,Statement-2 is True

answer is A.

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Detailed Solution

In case of semi conductors, the gap b/w valance band and Conduction is small and there four some of electrons may jump from valance band to conduction band and thus on increasing temp conductivty will increase.

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