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Saturday, 31 October

JEE Main · Physics · System of Particles and Rotational Motion

Conservation of Angular Momentum

JEE Main asked Conservation of Angular Momentum 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023 and 2024. It belongs to Angular Momentum, in System of Particles and Rotational Motion (Physics). The longest wait between two years asking it was 1 year. In 2023 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
5 of 8
First asked
2020
last in 2024
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 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.

00.10.20’170.08’200.03’210.03’220.14’230.09’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 2 in 12 shifts · 2024: 2 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
  • 20242 of 18
  • 20232 of 12
  • 20221 of 24
  • 20211 of 24
  • 20201 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.

  • Conservation of angular momentum when mass added
  • Day length when earth radius changes

Difficulty

Easy 4Medium 3Hard 0

3 of the 7 questions had a numerical answer.

Every question

All 7 questions

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

  1. 8 Apr 2024, Shift 2 · Q35A thin circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular…EasySingle correct
  2. 6 Apr 2024, Shift 1 · Q56If the radius of earth is reduced to three-fourth of its present value without change in its mass then value of duration of the day of…MediumNumerical value
  3. 11 Apr 2023, Shift 2 · Q53A circular plate is rotating in horizontal plane, about an axis passing through its center and perpendicular to the plate, with an angular…MediumNumerical value
  4. 10 Apr 2023, Shift 1 · Q53If the earth suddenly shrinks to 164\frac{1}{64}th of its original volume with its mass remaining the same, the period of rotation of earth…MediumNumerical value
  5. 26 Jun 2022, Shift 1 · Q35A thin circular ring of mass M and radius R is rotating with a constant angular velocity 2 rads−1\mathrm{rads^{-1}} in a horizontal plane…EasySingle correct
  6. 18 Mar 2021, Shift 1 · Q20A thin circular ring of mass M and radius r is rotating about its axis with an angular speed ω\omega. Two particles having mass m each…EasySingle correct
  7. 5 Sep 2020, Shift 1 · Q4A wheel is rotating freely with an angular speed ω\omega on a shaft. The moment of inertia of the wheel is I and the moment of inertia of…EasySingle correct

Shifts: 5 Sep 2020, Shift 1, 18 Mar 2021, Shift 1, 26 Jun 2022, Shift 1, 10 Apr 2023, Shift 1, 11 Apr 2023, Shift 2, 6 Apr 2024, Shift 1, 8 Apr 2024, Shift 2.

Same topic

Other ideas in Angular Momentum

Angular Momentum has 13 ideas JEE Main has asked; 8 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas