Aluminum metal has a threshold to wavelength frequency corresponding A 4770 Å. Calculate the photoelectric work function for aluminium and express it in eV.

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Estimate the binding energy of electrons in magnesium, given that the wavelength of 337 nm is the longest wavelength that a photon may have to eject a photoelectron from magnesium photoelectrode. Electrons are bound to the magnesium with potential depth of at least eV.

Font Paragraph Styles Voice Sensitivity 5. The dispersion relation for propagating waves is the equation w = w(k) giving the angular frequency as a function of the wavenumber. A free-electron will have the energy-momentum relation E = 2m Use this relation, in conjunction with Planck's equation and De Broglie's equation, to determine the quantum mechanical dispersion relation for the wave associated with a free electron. S GeneralVAll Employees (unrestricted) 2 Accessibility: Good to go D. Focus words 23 ain Cop