Electronics and Communication Engineering - Exam Questions Papers - Discussion


Consider the following statements:

  1. With increase in temperature Fermi-level tries to come in between the energy gap exactly at middle
  2. Mobility of electron in GaAs is very high compared to mobility of hole
  3. In LED, the light energy radiated due to recombination with the aid of traps.
Which of these statements are true?

[A]. 1 and 2
[B]. 1, 2 and 3
[C]. 2 and 3
[D]. 1 and 3

Answer: Option A


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