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Question: Answered & Verified by Expert
Identify the incorrect statement.
PhysicsSemiconductorsKCETKCET 2021
Options:
  • A When a $p$-n junction diode is forward biased, then the width of the depletion region decreases.
  • B When a $p$ - $n$ junction diode is reverse biased, the barrier potential increases.
  • C A photodiode is operated in the reverse bias.
  • D An LED is a lightly doped $p$ - $n$ junction diode which emits spontaneous radiation of forward biasing.
Solution:
2465 Upvotes Verified Answer
The correct answer is: An LED is a lightly doped $p$ - $n$ junction diode which emits spontaneous radiation of forward biasing.
The LED is a heavily doped $p$ - $n$ junction with forward biasing. It is a specially designed forward biased $p$ - $n$ junction diode that emits light spontaneously when energised.

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