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2 V 4+ Metal X Photon Metal Y A photon with energy 4 eV is incident on metal X, which has a work function

2 V 4+ Metal X Photon Metal Y A photon with energy 4 eV is incident on metal X, which has a work function of 3 eV. Metal X is electrically connected to metal Y through a 2V voltage supply with the polarity shown in the figure above. What is the maximum kinetic energy an emitted electron could have when it reaches metal Y?

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