Identify the incorrect statement.
- AWhen a $p-n$ junction diode is forward biased,the width of the depletion region decreases.
- BWhen a $p-n$ junction diode is reverse biased,the barrier potential increases.
- C$A$ photodiode is operated in the reverse bias.
- DAn $LED$ is a lightly doped $p-n$ junction diode which emits spontaneous radiation on forward biasing.
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