The gap between the valence and conduction bands of a certain semiconductor is 0.85 eV…
Physics · JEE Main · NTA Exams — Electronic Devices
The gap between the valence and conduction bands of a certain semiconductor is 0.85 eV. When this semiconductor is used to form a light emitting diode, the wavelength of the light emitted.
- is in a range above 1.5×10–6 m
- is in a range below 1.5×10–6 m
- is always 1.5×10–6 m
- is in a range centered on 1.5×10–6 m.
Answer
(B) is in a range below 1.5×10 –6 m
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