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Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
MCQ
When a hole is produced in P-type semiconductor, there is:
  • A
    Extra electron in valence band
  • B
    Extra electron in conduction band
  • C
    Missing electron in valence band
  • D
    Missing electron in conduction band
✓

Answer

  1. Missing electron in valence band

Explanation:

A hole is not itself a physical quantity but a missing electron in valence band. An electron from adjacent site jumps to fill this hole and thus creates a hole at its former site. So it seems as if the hole itself has moved.

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