As we learnt in
P -N junction as diode -
It is a one way device. It offers a low resistance when forward biased and high resistance when reverse biased.
- wherein
R = 0, Forward
R Reverse
Diode will pass the current only when it is forward biased. Hence output will be obtained when voltage is positive that is it lies between 0 - 5 V.
hence option 3 is correct
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