As we know, de Broglie wavelength is given by, λ=ph=mvh
⇒v=mλh
Therefore,
vαvp=mpmα×λpλα
=4×2=8
The de Broglie wavelengths of a proton and an α particle are λ and 2λ respectively. The ratio of the velocities of proton and α particle will be :
Held on 1 Feb 2024 · Verified 6 Jul 2026.
1:8
1:2
4:1
8:1
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