Compute the de broglie wavelength of electron, Physics

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Q. The kinetic energy of an electron 120 eV. Compute the de Broglie wavelength of electron.

λ = h / √2mE

λ = 6.626 X 10-34 / √ 2 X 9.1 X 10 -31 X 120 X 1.6 X 10-19

λ = 1.121 X 10 -10 m


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