Q. If in a junction diode, a square input signal of is applied as shown, then the output signal across will be Physics Question Image

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Solution:

For negative potential, the diode becomes reverse biased whereas for positive potential diode is forward biased.
For , the diode is reverse biased and hence offer infinite resistance, so circut would be like as shown in Fig. (2) and
image
For , the diode is forward biased and circuit would be as shown in Fig. (3) and .