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Dual Nature of Radiation and Matter question

2002 · Q142
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Dual Nature of Radiation and Matter question

2002 · Q142

NEETPhysicsDual Nature of Radiation and MatterMCQ+4 / −1
If particles are moving with same velocity, then which has maximum de Broglie wavelength?
  1. A
    proton
  2. B
    α\alphaα-particle
  3. C
    neutron
  4. D
    β\betaβ-particle
View written solutionFree

Correct answer: D

de Broglie wavelength for a particle is given by

λ\lambda λ = hmv{h \over {mv}}mvh​

Since all the particles are moving with same velocity, the particle with least mass will have maximum de-Broglie wavelength.

Here β\beta β-particles(electrons) has the lowest mass and therefore it has maximum wavelength.

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