Light with unknown wavelength is incident on piece of copper

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Light with some unknown wavelength is incident on a piece of copper. The most energetic electrons emitted from the copper have 2.7eV of kinetic energy. If the copper is replaced by apiece s0odium, what will be the maximum possible kinetic energy K of the electrons emitted from this new surface? Answer must be K = ? eV

Reference no: EM13669589

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