What is the wavelength of an electron of energy 100 ev?
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E = 100 eV = 100 * 1.602 * 10^{-19} J = 1.602 * 10^{-17} J
lambda = h/ sqrt(2mE) = 6.626 * 10^{-34} / sqrt(2 * 9.1 * 10^{-31} * 1.602 * 10^{-17}) = 1.227 * 10^{-10} m
Answered by
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E = 100 eV = 100 * 1.602 * 10^{-19} J = 1.602 * 10^{-17} J
lambda = h/ sqrt(2mE) = 6.626 * 10^{-34} / sqrt(2 * 9.1 * 10^{-31} * 1.602 * 10^{-17}) = 1.227 * 10^{-10} m
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