NEET Physics (general) MCQ Question
Which of the following statements about semiconductor energy bands and conduction is correct?
In n-type semiconductors, electrons are the majority carriers and can move easily in the conduction band.
Insulators have a small band gap which allows for electrical conduction at room temperature.
P-type semiconductors are formed by doping with pentavalent impurities.
A large band gap prevents any electrons from moving to the conduction band, limiting conduction.
Correct Answer
Detailed Explanation
In n-type semiconductors, electrons become the majority carriers, allowing for efficient conduction (Chunk 4). Insulators, as stated in Chunk 3, have a large band gap that prevents conduction, and p-type semiconductors are formed by trivalent doping, not pentavalent.
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