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E2 solutions: Photoelectric effect

1. A filament lamp gives out light of average wavelength 600nm when connected to a 220V supply. The current flowing through the filament is 5A (rms).If 3x1020 photons are emitted per second calculate the % of the energy delivered to the lamp that is converted into light.Solution2. The graph below was taken from the PHET photoelectric simulation.Use the graph to finda. Planks constantb. The workfunction of Sodium

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