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JEE Main 202125 JulyMorning Shift
Exam
JEE Main
Year
2021
Date
25 July
Shift
Morning Shift
Subject
Physics
Chapter
Dual Nature of Matter

JEE Main 2021 · 25 July · Morning Shift · Physics · Dual Nature of Matter

A particle of mass 4M at rest disintegrates into two particles of...

A particle of mass 4M4M at rest disintegrates into two particles of mass MM and 3M3M, respectively, having non zero velocities. The ratio of de-Broglie wavelength of particle of mass MM to that of mass 3M3M will be:

Options

  1. A1:31: 3
  2. B3:13: 1
  3. C1:31: \sqrt{3}
  4. D1:11: 1

Correct answer

D. 1:11: 1

Step-by-step solution

λ=hp\lambda = \dfrac{h}{p}

Both the particles will move with momentum same in magnitude and opposite in direction.

So de Broglie wavelength of both will be same, i.e., ratio 1:11: 1.

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