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Saturday, 31 October

JEE Main · Physics · Moving Charges and Magnetism

Cyclotron Frequency and Energy

JEE Main asked Cyclotron Frequency and Energy 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2022 and 2025. It belongs to Lorentz Force, in Moving Charges and Magnetism (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
4
in 4 shifts
Years
3 of 8
First asked
2021
last in 2025
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170’200.03’210.07’220’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

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

  • 20260 of 9
  • 20251 of 8
  • 20240 of 18
  • 20230 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

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

  • Maximum kinetic energy in cyclotron
  • Time period of charge in magnetic field

Difficulty

Easy 2Medium 2Hard 0

2 of the 4 questions had a numerical answer.

Every question

All 4 questions

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

  1. 4 Apr 2025, Shift 2 · Q49A particle of charge 1.6 μ\muC and mass 16 μ\mug is present in a strong magnetic field of 6.28 T. The particle is then fired…EasyNumerical value
  2. 30 Jun 2022, Shift 1 · Q43A cyclotron is working at a frequency of 10 MHz. If the radius of its dees is 60 cm. The maximum kinetic energy of accelerated proton will…MediumSingle correct
  3. 27 Jul 2022, Shift 2 · Q43A cyclotron is used to accelerate protons. If the operating magnetic field is 1.0 T and the radius of the cyclotron 'dees' is 60 cm, the…EasySingle correct
  4. 26 Aug 2021, Shift 2 · Q25If the maximum value of accelerating potential provided by a radio frequency oscillator is 12 kV. The number of revolution made by a…MediumNumerical value

Shifts: 26 Aug 2021, Shift 2, 30 Jun 2022, Shift 1, 27 Jul 2022, Shift 2, 4 Apr 2025, Shift 2.

Same topic

Other ideas in Lorentz Force

Lorentz Force has 18 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