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27. A light source with a wavelength of 548 nm shines on a photocell with a 1.60 eV work function. In order to have an

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27. A light source with a wavelength of 548 nm shines on a photocell with a 1.60 eV work function. In order to have an output voltage of 12.0 V DC, the number of photocells that must be linked in series is A. 5 photocells B. 8 photocells C. 10 photocells D. 18 photocells

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