If particles are moving with same velocity, then which has maximum de Broglie wavelength?
‐particle
‐particle.
Text Solution
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de Broglie wavelength for a particle is given by 
, where m, 
and p are the mass, velocity and momentum respectively. h is Planck’s constant. Now, since all the particles are moving with same velocity, the particle with least mass will have maximum de‐Broglie wavelength. Out of the given four particles (proton, neutron, 
‐particles, i.e., He nucleus and 
‐particles, i.e., electrons) 
‐particle has the lowest mass and therefore it has maximum wavelength.
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