Verified Solution • 2025–26 Session
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QAIPMT-2005-Ph-2541: NEET 2005 Physics - Class 12 AIPMT-2005-Ph-2541 Solution: Choose the only false statement from the following.
Choose the only false statement from the following.
Multiple Choice Options
- A In conductors the valence and conduction bands overlap.
- B Substances with energy gap of the order of 10 eV are insulators.
- C The resistivity of a semiconductor increases with increase in temperature.
- D The conductivity of a semiconductor increases with increase in temperature.
Step-by-Step Verified Solution
Option (a) is correct as in conductor conduction
and valance band overlap and the conduction band
is partially filled
Option (b) is correct as insulators have energy gap
of 5 - 10 eV.
Option (c) is incorrect as resistivity decreases with
increase in temperature.
Option (d) is correct as with increase in temperature,
more and more electrons jump to conduction band,
hence conductivity increases.