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Saturday, 31 October

JEE Main · Physics · Semiconductor Electronics: Materials, Devices and Simple Circuits

Depletion Region Formation

JEE Main asked Depletion Region Formation 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2026. It belongs to Semiconductor Diodes, in Semiconductor Electronics: Materials, Devices and Simple Circuits (Physics). The longest wait between two years asking it was 4 years.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2022
last in 2026
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2022 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170’200’210.03’220’230’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20250 of 8
  • 20240 of 18
  • 20230 of 12
  • 20221 of 24
  • 20210 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • True statement on depletion width asymmetry
  • Electric field in p-n junction depletion region

Difficulty

Easy 1Medium 1Hard 0

1 of the 2 questions had a numerical answer.

Every question

All 2 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 5 Apr 2026, Shift 2 · Q45In a semiconductor p-n diode, the doping concentrations on p-side and n-side are 101510^{15} atoms/cm3^3 and 101810^{18} atoms/cm3^3,…MediumSingle correct
  2. 29 Jul 2022, Shift 1 · Q60If the potential barrier across a p-n junction is 0.6 V. Then the electric field intensity, in the depletion region having the width of…EasyNumerical value

Shifts: 29 Jul 2022, Shift 1, 5 Apr 2026, Shift 2.

Same topic

Other ideas in Semiconductor Diodes

Semiconductor Diodes has 17 ideas JEE Main has asked; 10 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas