KCET 2021 Physics Solved Paper

Question : 23 of 60

Marks: +1, -0

Identify the incorrect statement.

When a p-n junction diode is forward biased, then the width of the depletion region decreases.
When a p - n junction diode is reverse biased. the barrier potential increases.
A photodiode is operated in the reverse bias.
An LED is a lightly doped p−n junction diode which emits spontaneous radiation of forward biasing.

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