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In a p-n junction diode, the depletion region forms due to:

  1. Diffusion of majority carriers
  2. Drift of minority carriers
  3. Recombination of electrons and holes
  4. All of these

Answer: All of these

Depletion region: majority carriers diffuse across junction, recombine, leaving immobile ions. Creates built-in potential barrier. Fundamental to diode rectification, transistor operation. [[NCERT Physics Class 12]]

Topic Physics - Semiconductor Physics
Exam Relevance Railway JE, SSC JE, Banking Specialist Officer

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