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Any semiconductor diode has a junction capacitance varying with reverse bias. If such a diode has microwave characteristics, it is called:

Any semiconductor diode has a junction capacitance varying with reverse bias. If such a diode has microwave characteristics, it is called: Correct Answer None of the mentioned

Any semiconductor diode has a junction capacitance varying with reverse bias. If such a diode has microwave characteristics, it is called varactor diode. With the reverse bias, the junction is depleted of mobile carriers resulting in a capacitance that is the diode behaves as a capacitance with the junction acting as dielectric between two conducting plates.

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Assertion (A): A p-n junction has high resistance in reverse direction.
Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.