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Saturday, 31 October

JEE Main · Physics · Work, Energy and Power

Inelastic Collisions

JEE Main asked Inelastic Collisions 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2022 and 2023. It belongs to Collisions, in Work, Energy and Power (Physics). The longest wait between two years asking it was 2 years. In 2020 and 2023 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
2020
last in 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.20.40’170.34’200’210.03’220.14’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 4 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 2 in 12 shifts · 2024: 0 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
  • 20240 of 18
  • 20232 of 12
  • 20221 of 24
  • 20210 of 24
  • 20204 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: multi-step.

  • Bullet embedded block then friction stopping
  • Range after inelastic collision at maximum height

Difficulty

Easy 2Medium 4Hard 1

Every question was multiple choice.

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. 10 Apr 2023, Shift 1 · Q40A particle of mass mm moving with velocity vv collides with a stationary particle of mass 2m2m. After collision, they stick together and…EasySingle correct
  2. 8 Apr 2023, Shift 2 · Q40A bullet of mass 0.1 kg moving horizontally with speed 400 ms−1^{-1} hits a wooden block of mass 3.9 kg kept on a horizontal rough…MediumSingle correct
  3. 25 Jul 2022, Shift 2 · Q47A bag of sand of mass 9.8 kg is suspended by a rope. A bullet of 200 g travelling with speed 10 ms−1^{-1} gets embedded in it, then loss…EasySingle correct
  4. 3 Sep 2020, Shift 2 · Q3A block of mass 1.9 kg is at rest at the edge of a table, of height 1 m. A bullet of mass 0.1 kg collides with the block and sticks to it.…MediumSingle correct
  5. 9 Jan 2020, Shift 2 · Q4A particle of mass mm is projected with a speed uu from the ground at an angle θ=π3\theta = \frac{\pi}{3} w.r.t. horizontal (xx-axis).…MediumSingle correct
  6. 9 Jan 2020, Shift 1 · Q3Two particles of equal mass m have respective initial velocities ui^u\hat{i} and u(i^+j^2)u\left(\frac{\hat{i}+\hat{j}}{2}\right). They collide…MediumSingle correct
  7. 8 Jan 2020, Shift 2 · Q3A particle of mass m is dropped from a height h above the ground. At the same time another particle of the same mass is thrown vertically…HardSingle correct

Shifts: 8 Jan 2020, Shift 2, 9 Jan 2020, Shift 2, 9 Jan 2020, Shift 1, 3 Sep 2020, Shift 2, 25 Jul 2022, Shift 2, 8 Apr 2023, Shift 2, 10 Apr 2023, 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