For non-conductors (insulators),the energy gap is: (in $, eV$)

  • A
    $6$
  • B
    $1.1$
  • C
    $0.8$
  • D
    $0.3$

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Three semiconductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is:

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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..........$\mathring{A}$.

The resistivity $(\rho)$ of a semiconductor varies with temperature. Which of the following curves represents the correct behavior?

What is an energy band?

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