Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-diagram based-Medium-Class 12
Consider a semiconductor material with a small band gap as shown in a diagram. Which statement accurately describes the behavior of electrons in this material at room temperature?
A
Some electrons can move to the conduction band, allowing electrical conduction.
B
No electrons can move to the conduction band, preventing electrical conduction.
C
All electrons are free to move, resulting in high electrical conductivity.
D
Electrons remain in the valence band, unable to conduct electricity.
Correct Answer
Option A
Detailed Explanation
In semiconductors with a small band gap (E_g < 3 eV), some electrons can acquire enough energy to move to the conduction band at room temperature, enabling electrical conduction.
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