Q. Which one of the following statement is not correct in the case of light emitting diodes
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 gap of the semiconductor used
Explanation
The correct answer is Option C: It emits light only when it is reverse biased.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.