Question

On increasing the temperature, the increase in conductivity of intrinsic semiconductor is due to
(A) Decrease in band gap between valence band and conduction band
(B) Increase in electrons in conduction band
(C) Increase in negative charged electrons than positive holes in valence band
(D) Increase in electrons in valence band
​

Answer 1

Answer:

Explanation:

The band-gap energy of semiconductors tends to decrease with increasing temperature. When temperature increases, the amplitude of atomic vibrations increase, leading to larger interatomic spacing.When two beams collide, all that energy packed into such a small vacuum of space explodes and creates mass in the form of subatomic particles (think of Einstein's famous equation: energy equals mass multiplied by the speed of light squared)

Answer 2

Answer:

A) Decrease in band gap between valence band and conduction band