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Question

# Moving with the same velocity, one of the following has the longest de Broglie wavelengthprotonα−particleβ−particleneutron

A
αparticle
B
βparticle
C
proton
D
neutron
Solution
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#### De-broglie wavelengthλ=hmvλ∝1mβ particle has least mass.So β particle has the longest wavelength.

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