why does the electrical conductivity of semiconductors increse with rise in temperature?

Electrical conductivity of a semiconductor

Electrical conductivity of a semiconductor

The electrical conductivity of semiconductor is

The conductivity of a semiconductor increases with increase in temperature because

The conductivity of a semiconductor increases with increase in temperature because

Assertion (A) : The electrical conductivity of a semiconductor increases with increase in temperature. Reason (R ) : With increase in temperature, large number of electrons from the valence band can jump to the conduction band.

Statement I : Electrical conductivity of semiconductors increases with rise in temperature. Statement II : There is a small energy gap between conduction band and valence band.