A Zener diode

is a lightly doped junction diode.

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heavily doped junction diode.

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is either p-type or n-type.

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has no p-n junction.

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Solution

The correct option is B heavily doped junction diode.
The reverse breakdown voltage depends on doping of the diode. Hence, in the Zener diode the heavy doping of its p-n junction is done. The depletion region formed in the diode is very thin ( $< 1 m$ ) and the reverse bias voltage of about $5 V$ which is less than ordinary diode.

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Similar questions

For transistor action, which of the following statements are correct:

(a) Base, emitter and collector regions should have similar size and doping concentrations.

(b) The base region must be very thin and lightly doped.

(d) Both the emitter junction as well as the collector junction are forward biased.

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