Which of the following statements is true about the conduction and valence bands of a semiconductor?

JAMB Physics 2023 101 views

Which of the following statements is true about the conduction and valence bands of a semiconductor?

  1. The conduction band is always empty, while the valence band is always full.
  2. The conduction band is always full, while the valence band is always empty.
  3. The conduction band and the valence band can overlap.
  4. The conduction band and the valence band are always separated by a finite energy gap. ✓

Explanation

This physics concept involves analyzing the given values and applying relevant formulas. Work through the problem step by step using known equations and constants.

Identify what quantity needs to be found and which formula connects the given information to the answer. Substitute the values carefully, paying attention to units.

Check that your calculated answer matches one of the options provided. Understanding the underlying principle helps verify the solution makes physical sense.

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