Which of the following statements is incorrect?

  • A
    In conductors,the conduction band and valence band overlap.
  • B
    $A$ material with an energy band gap of the order of $10 \ eV$ is an insulator.
  • C
    The resistivity of a semiconductor increases with temperature.
  • D
    The conductivity of a semiconductor increases with temperature.

Explore More

Similar Questions

In a good conductor,the energy gap between the conduction band and the valence band is:

If the lattice constant of this semiconductor is decreased,then which of the following is correct?

Difficult
View Solution

The forbidden energy gap in $Ge$ is $0.72\,eV$. Given,$hc = 12400\,eV\cdot\mathring{A}$. The maximum wavelength of radiation that will generate an electron-hole pair is..........$\mathring{A}$.

Explain by drawing the energy levels of $Si$ and $Ge$ containing $N$ atoms at $0\, K$ temperature.

In which material is the energy band gap maximum?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo