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Friday, 9 October

JEE Main Physics · Work, Energy and Power

Oblique Collisions

Oblique Collisions (Work, Energy and Power) was asked 3 times in 3 JEE Main shifts, 2020, out of the 42 shifts Lumi analysed. 1 of the 3 had a numerical answer.

Times asked
3
in 3 shifts
Years
2020
Usual format
Single correct
Multi-step
Pattern
Gone quiet
repeats across shifts

How it is asked

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

Difficulty

Easy 0Medium 3Hard 0

Where it sits

Chapter: Work, Energy and Power. Topic: Collisions, 15 questions over 9 ideas.

Other repeat ideas in this topic

Every time it came

All 3 questions

Newest first, each with its options and official answer.

  1. 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
  2. 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
  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