CUET · PHYSICS · PYQ PAPER 2025
For n-type semiconductor, which of the following statements is true?
- A Trivalent atoms are the dopant and electrons are majority carriers.
- B Trivalent atoms are the dopant and holes are majority carriers.
- C Pentavalent atoms are the dopant and electrons are minority carriers.
- D Pentavalent atoms are the dopant and holes are the minority carriers.
Answer & Solution
Correct Answer
(D) Pentavalent atoms are the dopant and holes are the minority carriers.
Step-by-step Solution
Detailed explanation
An n-type semiconductor is created by doping a pure semiconductor (like Silicon) with pentavalent impurities (atoms with 5 valence electrons, such as Phosphorus or Arsenic). Four of these electrons form covalent bonds with neighboring atoms, while the fifth electron becomes a…
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