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Saturday, 31 October

JEE Main · Physics · System of Particles and Rotational Motion

Momentum in Explosions

JEE Main asked Momentum in Explosions 7 times in 7 of the 108 shifts Lumi analysed, in 2021, 2022 and 2024. It belongs to Collisions, in System of Particles and Rotational Motion (Physics). The longest wait between two years asking it was 2 years. In 2021, 2022 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
3 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 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170’200.10’210.07’220’230.09’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 3 in 24 shifts · 2022: 2 in 24 shifts · 2023: 0 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
  • 20230 of 12
  • 20222 of 24
  • 20213 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.

  • Kinetic energy ratio after recoil
  • Fragment velocity from momentum conservation

Difficulty

Easy 4Medium 3Hard 0

2 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. 31 Jan 2024, Shift 1 · Q35An artillery piece of mass M1M_1 fires a shell of mass M2M_2 horizontally. Instantaneously after the firing, the ratio of kinetic energy…EasySingle correct
  2. 8 Apr 2024, Shift 1 · Q33A stationary particle breaks into two parts of masses mAm_A and mBm_B which move with velocities vAv_A and vBv_B respectively. The ratio…EasySingle correct
  3. 29 Jun 2022, Shift 1 · Q32A body of mass M at rest explodes into three pieces, in the ratio of masses 1:1:21 : 1 : 2. Two smaller pieces fly off perpendicular to each…EasySingle correct
  4. 30 Jul 2022, Shift 2 · Q29A body moving horizontally on a smooth surface with a speed of 20 ms−1^{-1} splits into two parts and continue to move in the same…MediumNumerical value
  5. 18 Mar 2021, Shift 1 · Q22A ball of mass 10 kg moving with a velocity 10310\sqrt{3} m/s along the xx-axis, hits another ball of mass 20 kg which is at rest. After…MediumNumerical valueHas a figure
  6. 22 Jul 2021, Shift 2 · Q15A bullet of ‘4 g’ mass is fired from a gun of mass 4 kg. If the bullet moves with the muzzle speed of 50 ms−150\ \mathrm{ms^{-1}}, the impulse…EasySingle correct
  7. 31 Aug 2021, Shift 2 · Q8A block moving horizontally on a smooth surface with a speed of 4040 m/s splits into two parts with masses in the ratio of 1:21:2. If the…MediumSingle correct

Shifts: 18 Mar 2021, Shift 1, 22 Jul 2021, Shift 2, 31 Aug 2021, Shift 2, 29 Jun 2022, Shift 1, 30 Jul 2022, Shift 2, 31 Jan 2024, Shift 1, 8 Apr 2024, Shift 1.

Same topic

Other ideas in Collisions

Collisions 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