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If electron, Hydrogen, Lithium and sodium nuclei are moving with the velocity of light, then the wavelengths associated with theseparticles are in the order?(A) Electron > Hydrogen > Lithium > Sodium(B) Electron > Sodium > Hydrogen > Lithium(C) Sodium > Lithium > Hydrogen > Electron(D) Electron > Lithium > Sodium > Hydrogen |
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Answer» Answer: Explanation: ACCORDING TO DEBROGLIE EQUATION wavelength = H/mv h = 6.63×10^-34 thus wavelength ∝ 1/mass when mass increases wavelength decreases SINCE there are inversely proportion according to increase in mass order is electron < hydrogen < lithium < sodium according to wavelength order ∴electron > hydrogen > lithium > sodium thus answer is option A |
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