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     EduGorilla 
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    A beam of light of wavelength 400 nm and power 1.55 mW is directed at the cathode of a photoelectric cell. If only 10% of the incident photons effectively produce photoelectrons, then find current due to these electrons.
    (Given: hc = 1240 eV-nm, e = 1.6 x 10–19 C)

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