In a photoelectric effect experiment,electrons emerge from a copper surface with a maximum kinetic energy of 1.10 eV when light shines on the surface.The work function of copper is 4.65 eV.Which one of the following values is closest to the wavelength of the light? 
,c = 3.00 × 108 m/s,1 eV = 1.60 × 10-19 J)
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