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Light with frequency f1 = 7.3 1014 Hz strikes a metal sheet with unknown work function, and a stopping voltage of V1 = 2.7 V

Light with frequency f1 = 7.3 1014 Hz strikes a metal sheet with unknown work function, and a stopping voltage of V1 = 2.7 V is measured. Then a different source of light with f2 = 4.5 1014 Hz strikes the same metal sheet. What stopping voltage V2 will be measured now? As part of the representation, draw a graph with the light's frequency on the x-axis and the stopping voltage on the y-axis; draw separate curves for the two light sources. The symbolic answer should be stated in terms of f1, V1, f2, h, c, and e, though not all of these quantities may be needed

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