Question

The de Broglie wavelength of a particle with mass 1 g and velocity 100 m/s

Answer 1

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

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