Correct option is D
A tunnel diode is a special type of diode known for its ability to operate in the negative resistance region, where an increase in voltage results in a decrease in current.
This property makes tunnel diodes capable of both amplification and oscillation.
Tunnel diodes are used in high-frequency oscillators and amplifiers due to their fast response time and ability to operate at very high frequencies.
Advantage of Tunnel diode:
High-speed operation
Low power consumption
High sensitivity
High efficiency and unique properties for quantum computing