engineering recuitment BARC Stipendiary Trainee Category II 2023 Mock Test Electronic Devices Semiconductors Semiconductor Materials
The light emitting diode (LED) emits light of a particular color because
1
Heat generated in the diode is converted into light
2
The band gap of the semiconductor material used in the fabrication of the diode is equal to energy of light photon
3
Transition between energy levels of the carriers takes place while crossing p-n junction.
4
It is fabricated from a fluorescent material