In case of p -n junction diode, the width of depletion region is (a) decreased with heavy doping (b) increased by reverse biasing (c) decreased with light doping (d) increased by forward biasing

Answer: (b). Heavy doping makes the depletion layer thinner, light doping makes it wider, so (a) is true in itself but (c) is false. Reverse bias widens the depletion region; forward bias narrows it. The standard expected answer is (b) increased by reverse biasing.

In case of p -n junction diode, the width of depletion region is | MHT CET 2019 (2 May, Shift 2)

Q87MHT CET 2019 · 2 MAY · SHIFT 2Easy

P-N Junction Diode

In case of $p$ -n junction diode, the width of depletion region is

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Answer: (b)

Heavy doping makes the depletion layer thinner, light doping makes it wider, so (a) is true in itself but (c) is false.
Reverse bias widens the depletion region; forward bias narrows it.
The standard expected answer is (b) increased by reverse biasing.

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