NEET Physics (general) MCQ Question
Which of the following statements regarding the behavior of intrinsic and extrinsic semiconductors is correct?
Intrinsic semiconductors behave like insulators at absolute zero, while extrinsic semiconductors have charge carriers introduced through doping.
Both intrinsic and extrinsic semiconductors possess the same level of charge carriers at room temperature.
Extrinsic semiconductors do not have any charge carriers until they are heated to high temperatures.
Intrinsic semiconductors always have a higher conductivity than extrinsic semiconductors.
Correct Answer
Detailed Explanation
Intrinsic semiconductors behave like insulators at T = 0 K and gain charge carriers through thermal excitation at higher temperatures. Extrinsic semiconductors have charge carriers introduced via doping, which alters their conductivity.
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