Verified Solution • 2025–26 Session moderate

QJEEM21Phcf0f: JEE Main 2021 Physics - Class 12 JEEM21Phcf0f Solution: A particle of mass 4M at rest disintegrates into two particles…

A particle of mass 4M at rest disintegrates into two particles of mass M and 3M respectively having non zero velocities. The ratio of de-Broglie wavelength of particle of mass M to that of mass 3M will be :

Multiple Choice Options

  • A 1:03
  • B 3:01
  • C 1 : 3\sqrt 3
  • D 1:01

Step-by-Step Verified Solution

λ=hp\lambda = {h \over p}

both the particles will move with momentum same in magnitude & opposite in direction.

So De-Broglie wavelength of both will be same i.e. ratio 1 : 1

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring