Learn

Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 26 July 2022, Shift 2, Physics Q40

Question 40 of 90 in this shift, Physics question 10 of 30, Section A.

A nucleus of mass M at rest splits into two parts having masses M′3\frac{M'}{3} and 2M′3\frac{2M'}{3} (M′<M)(M' < M). The ratio of de Broglie wavelength of two parts will be :
  1. (1)1:2
  2. (2)2:1
  3. (3)1:1Official answer
  4. (4)2:3

Official answer

Option 3

NTA final key.

Chapter
Dual Nature of Radiation and Matter
Topic
Matter Waves
Idea tested
Wavelengths in Radioactive Decay

Same idea in other shifts

Asked 2× in all
  1. 25 Jul 2021, Shift 1 · Q7A particle of mass 4M at rest disintegrates into two particles of mass M and 3M respectively having non zero velocities. The ratio of…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.