CUET · PHYSICS · PYQ PAPER 2023
A p-type semiconductor can be obtained by adding
- A arsenic to pure silicon
- B aluminum to pure silicon
- C phosphorous to pure germanium
- D antimony to pure carbon
Answer & Solution
Correct Answer
(B) aluminum to pure silicon
Step-by-step Solution
Detailed explanation
A p-type semiconductor is created by adding trivalent impurities (like aluminum, boron, or indium) to a tetravalent semiconductor like silicon. These impurities have only three valence electrons, creating "holes" that act as positive charge carriers. B) aluminum to pure silicon
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