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What would the minimum work function for a metal have to be for visible light (1. 50 X 1014Hz - 4.61 x 1014Hz) will eject

What would the minimum work function for a metal have to be for visible light (1. 50 X 1014Hz - 4.61 x 1014Hz) will eject photoelectrons? A. 6.20 eV B. 2.11 eV C. 1.65 eV D. 0.11 eV

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