Question

alpha particles, beta particles, proton and neutrons are moving with the same velocity which has the highest momentum​

Answer 1

If particles are moving with the same velocity, then what is maximum de Broglie wavelength for?

Formula for de Broglie wavelength is, λ=hp

where h=Planck’s constant and p=mv which is linear momentum

Therefore

λ=hmv

If v is constant then, λα1m

Thus wavelength will be inversly proportional to mass.

So the particle having higher mass will have lower wavelength and vice-versa.

So alpha particle has the highest momentum.

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