Question

The energy of radiation emitted by LED is :-
a) greater than the band gap of the semiconductor used.
b) always less than the band gap of the semiconductor used.
c) always equal to the band gap of the semiconductor used.
d) equal to or less than the band gap of the semiconductor used,​

Answer 1

The energy of radiation emitted by LED is :-

d) equal to or less than the band gap of the semiconductor used .