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Saturday, 31 October

JEE Main · Physics · Dual Nature of Radiation and Matter

Wavelength from Accelerating Potential

JEE Main asked Wavelength from Accelerating Potential 5 times in 5 of the 108 shifts Lumi analysed, in 2021, 2022, 2023 and 2026. It belongs to Matter Waves, in Dual Nature of Radiation and Matter (Physics). The longest wait between two years asking it was 3 years. In 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
4 of 8
First asked
2021
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170’200.03’210.07’220.07’230’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 1 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
  • 20231 of 12
  • 20222 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Potential ratio from wavelength change
  • Identify variable in de broglie formula

Difficulty

Easy 4Medium 1Hard 0

1 of the 5 questions had a numerical answer.

Every question

All 5 questions

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

  1. 6 Apr 2026, Shift 2 · Q47The de Broglie wavelength for an electron accelerated through the potential difference of V1V_1 volt is λ1\lambda_1. When the potential…EasyNumerical value
  2. 12 Apr 2023, Shift 1 · Q47A proton and an α\alpha-particle are accelerated from rest by 2 V and 4 V potentials, respectively. The ratio of their de-Broglie…MediumSingle correct
  3. 30 Jul 2022, Shift 2 · Q19The de Broglie wavelength associated with an electron, accelerated through a potential difference of 15056 V, is:EasySingle correct
  4. 28 Jul 2022, Shift 1 · Q47The equation λ=1.227x\lambda=\frac{1.227}{x} nm can be used to find the de-Brogli wavelength of an electron. In this equation xx stands for :…EasySingle correct
  5. 22 Jul 2021, Shift 2 · Q10An electron of mass me\mathrm{m_e} and a proton of mass mp\mathrm{m_p} are accelerated through the same potential difference. The ratio of…EasySingle correct

Shifts: 22 Jul 2021, Shift 2, 28 Jul 2022, Shift 1, 30 Jul 2022, Shift 2, 12 Apr 2023, Shift 1, 6 Apr 2026, Shift 2.

Same topic

Other ideas in Matter Waves

Matter Waves has 20 ideas JEE Main has asked; 9 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas