Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202311 May 2023Morning ShiftPhysicsSemiconductorsActual

In energy band diagram of insulators, a band gap and the conduction band is respectively

Options

  1. Avery low and partially filled.
  2. Bvery high and completely filled.
  3. Cvery high and empty.
  4. Dvery low and empty.

Correct answer

C. very high and empty.

Step-by-step solution

In insulators, the energy gap between the valence band and the conduction band is very large (typically greater than 3 eV ). Due to this large band gap, electrons from the valence band cannot easily be excited to the conduction band even at room temperature. Therefore, the valence band is completely filled and the conduction band remains empty. Answer: very high, empty

Practice Semiconductors on Quantrex Academy →

More from Semiconductors

Pick out the correct statement from the following; 2026What is the minimum wavelength of radiation required to detect a p-n junction diode made of a semiconductor having band gap 3.3 eV. [Planck's constant h = 6.6 10³⁴ J.s ] 2026Genetic Engineering is related to the principle of 2026A silicon sample is doped simultaneously with donor impurity phosphorus at a concentration of N_D = 3 10²² m⁻³ and acceptor impurity boron at a concentration of N_D = 2.8 10²² m⁻³ 2026In a PN junction diode, the forward bias is increased gradually from 0 Volt to 1 Volt. Which of the following statements is correct? 2026In the circuit given, the reverse breakdown voltage of the Zener diode is 4.8 V. The current through the Zener and the power dissipation in Zener is: 2026An n-type and p-type semiconductor can be obtained by respectively doping pure silicon with 2026In which of the following figures, diode is reverse biased? 2026 Full Semiconductors list All MHT CET PYQs