Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2005PhysicsSemiconductorsActual

Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated energy band gaps represented (E_g )_C, (E_g )_ S i , and (E_g )_ G e respectively. Which one of the following relationship is true in their case?

Options

  1. A. ( E _g )_ C > E _g )_ Si
  2. B. ( E _g )_ C < E _g )_ Si
  3. C. ( E _g )_ C = E _g )_ Si
  4. D( E _g )_ C > ( E _g )_ Ge

Correct answer

A. . ( E _g )_ C > E _g )_ Si

Step-by-step solution

Band gap of carbon is 5.5 eV while that of silicon is 1.1 eV (E_g )_C> (E_B )_S

Practice Semiconductors on Quantrex Academy →

More from Semiconductors

For two inputs A and B and output Y, the Boolean expression for NOR gate is 2026For an n-type semiconductor, the relation between the number density ' n_h ' and ' n_e ' is 2026A silicon crystal is doped with 5 10¹⁷ cm ⁻³ atoms of boron. The electron concentration (n_e) at room temperature is (n_i = 1.5 10¹⁰ cm ⁻³) 2026If the current gain in common-base configuration ( ) of a transistor increases from 0.95 to 0.96, the percentage change in current gain in common-emitter configuration ( ) is appro 2026Out of the following what is used to detect the intensity of light ? 2026The color of light emitted by an LED is determined primarily by which of the following factors? 2026Which of the following is true for a p-type semiconductor? 2026In case of semiconductors, the band gap between the valence band and conduction band is 2026 Full Semiconductors list All NEET PYQs