Energy Band theory NCERT Exemplar (Objective) Based MCQs Semiconductor Electronics Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

The conductivity of a semiconductor increases with an increase in temperature,
because:

1.	number density of free current carries increases
2.	relaxation time increases
3.	both number density of carries and relaxation time increase
4.	number density of current carriers increases, relaxation time decreases but the effect of decrease in relaxation time is much less than the increase in number density

Subtopic: Energy Band theory |

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