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Statement 1: Electrical conductivity of ...

Statement 1: Electrical conductivity of intrinsic 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.

A

Statement 1 is True, statement 2 is true, statement 2 is correct explanation for statement 1.

B

Statement 1 is true, statement 2 is true, statement 2 is NOT a correct explanation for statement 1.

C

Statement 1 is true, statement 2 is false

D

Statement 1 is false, statement 2 is true

Text Solution

Verified by Experts

The correct Answer is:
A
In case of semiconductors, the gap between valence band and the conduction band is small and therefore some of the electrons may jump from valence band to conduction band and thus on increasing temperature conductivity is also increased.
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