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Saturday, 31 October

JEE Main · Physics · System of Particles and Rotational Motion

Radius of Gyration

JEE Main asked Radius of Gyration 5 times in 5 of the 108 shifts Lumi analysed, in 2021, 2022, 2023 and 2024. It belongs to Moment of Inertia, in System of Particles and Rotational Motion (Physics). The longest wait between two years asking it was 1 year. In 2023 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 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170’200.03’210.03’220.14’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 2 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 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
  • 20250 of 8
  • 20241 of 18
  • 20232 of 12
  • 20221 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.

  • Assertion-reason on moment of inertia
  • Ratio of radii of gyration of two bodies

Difficulty

Easy 3Medium 2Hard 0

3 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. 5 Apr 2024, Shift 1 · Q35Ratio of radius of gyration of a hollow sphere to that of a solid cylinder of equal mass, for moment of Inertia about their diameter axis…MediumSingle correctHas a figure
  2. 15 Apr 2023, Shift 1 · Q53A solid sphere and a solid cylinder of same mass and radius are rolling on a horizontal surface without slipping. The ratio of their…EasyNumerical value
  3. 6 Apr 2023, Shift 2 · Q52A ring and a solid sphere rotating about an axis passing through their centers have same radii of gyration. The axis of rotation is…MediumNumerical value
  4. 26 Jul 2022, Shift 2 · Q52The radius of gyration of a cylindrical rod about an axis of rotation perpendicular to its length and passing through the center will be…EasyNumerical value
  5. 25 Jul 2021, Shift 1 · Q15Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Moment of inertia of…EasyAssertion–reason

Shifts: 25 Jul 2021, Shift 1, 26 Jul 2022, Shift 2, 6 Apr 2023, Shift 2, 15 Apr 2023, Shift 1, 5 Apr 2024, Shift 1.

Same topic

Other ideas in Moment of Inertia

Moment of Inertia 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