Identify the WRONG statement from the following. In an intrinsic semiconductor

Identify the WRONG statement from the following. In an intrinsic semiconductor
  1. The number of free electrons is less than that in a conductor.
  2. The number of free electrons increases with temperature.
  3. There are no free electrons at any temperature except absolute zero.
  4. There are no free electrons at absolute zero temperature.

Solution

Concept based. At zero Kelvin semiconductor becomes perfect insulator. Therefore, no free electrons at zero Kelvin. ~

Asked in: MHT CET 2022 (07 Aug Shift 1)

Practice more Semiconductors questions on Aicharya