A) It is a heavily doped p-n junction
B) It emits light only when it is forward biased
C) It emits light only when it is reverse biased
D) The energy of the light emitted is less than the energy of the semiconductor used
Correct Answer: B
Solution :
Light emitting diodes are specially designed diodes, which give out light radiations when forward biased. LED's are made of Ga AsP, Ga P, etc.
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