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Saturday, 31 October

JEE Main · Physics · Work, Energy and Power

Oblique Collisions

JEE Main asked Oblique Collisions 6 times in 6 of the 108 shifts Lumi analysed, in 2020 and 2021. It belongs to Collisions, in Work, Energy and Power (Physics). The longest wait between two years asking it was 1 year. In 2020 and 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
6
in 6 shifts
Years
2 of 8
First asked
2020
last in 2021
Pattern
Gone quiet
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020 and 2021. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.20.40’170.34’200.07’210’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 4 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 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
  • 20230 of 12
  • 20220 of 24
  • 20212 of 24
  • 20204 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: multi-step.

  • Angle between velocities after 2d collision
  • Velocity after 2d elastic collision

Difficulty

Easy 0Medium 4Hard 2

3 of the 6 questions had a numerical answer.

Every question

All 6 questions

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

  1. 24 Feb 2021, Shift 1 · Q23A ball with a speed of 9 m/s collides with another identical ball at rest. After the collision, the direction of each ball makes an angle…MediumNumerical value
  2. 31 Aug 2021, Shift 1 · Q20A body of mass M moving at speed V0V_0 collides elastically with a mass 'm' at rest. After the collision, the two masses move at angles…HardSingle correct
  3. 6 Sep 2020, Shift 2 · Q4Particle A of mass m1m_1 moving with velocity (3i^+j^) ms−1\left(\sqrt{3}\hat{i}+\hat{j}\right)\,\mathrm{ms^{-1}} collides with another particle B of…MediumSingle correct
  4. 2 Sep 2020, Shift 2 · Q21A particle of mass m is moving along the x-axis with initial velocity ui^\hat{i}. It collides elastically with a particle of mass 10 m at…HardNumerical valueHas a figure
  5. 2 Sep 2020, Shift 1 · Q3A particle of mass mm with an initial velocity ui^u\hat{i} collides perfectly elastically with a mass 3m3m at rest. It moves with a…MediumSingle correct
  6. 8 Jan 2020, Shift 1 · Q22A body A, of mass m = 0.1 kg has an initial velocity of 3i^3\hat{i} ms−1^{-1}. It collides elastically with another body, B of the same…MediumNumerical value

Shifts: 8 Jan 2020, Shift 1, 2 Sep 2020, Shift 2, 2 Sep 2020, Shift 1, 6 Sep 2020, Shift 2, 24 Feb 2021, Shift 1, 31 Aug 2021, 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