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CGP EDU Academic Team
Published on: September 12, 2026
PHYSICS
SINGLE CORRECT MCQ
Statement I: If the temperature of a semiconductor is increased then it's resistance decreases.
Statement II: The energy gap between conduction band and valence band is very small.
Text Solution
Verified by ExpertsThe correct answer is:
A
PHYSICS
SINGLE CORRECT MCQ
In semiconductors the energy gap between conduction band and valence band is small ( 
). Due to temperature rise, electron in the valence band gain thermal energy and may jumpy across the small energy gap, (to the conduction band). Thus conductivity increases and hence resistance decreases.
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