Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Hard-Class 12
What happens to the motion of electrons in a semiconductor with a small band gap (E g < 3 eV) at room temperature?
A
Electrons can be thermally excited to the conduction band.
B
Electrons remain in the valence band due to insufficient energy.
C
Electrons move directly to the conduction band without any excitation.
D
Electrons are unable to move as they are bound in covalent bonds.
Correct Answer
Option A
Detailed Explanation
In semiconductors with a small band gap, some electrons can acquire enough thermal energy to move from the valence band to the conduction band.
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