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Sodium surface is illuminated with light of a wavelength 300nm. The work function for sodium metal is 2.46 eV. Find: (a) the maximum kinetic energy

Sodium surface is illuminated with light of a wavelength 300nm. The work function for sodium metal is 2.46 eV.

Find:

(a) the maximum kinetic energy of the ejected photoelectrons.

(b) the cutoff wavelength of sodium.

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