The equivalent wavelength of a moving electron has the same value as that of a photon of energy 6 × 10–17 J. Calculate the momentum of the electron.
According to the de Broglie hypothesis, the momentum of an electron is given by
p=6.626×10−343.31×10−9" data-mce-style="position: relative;">p=h/λp=6.626×10−343.31×10−9
whereh = Planck's constant=6.626×10−34
λ = Wavelength of electron
Energy of photon, E=hc/λ=6×10−17 J
where c = Speed of light=3×108 m/s
λ= Wavelength of photon
`⇒p=2×10−25 kg m s^−1`
Concept: Heisenberg and De Broglie Hypothesis
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