In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 520 nm . Pa

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In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 520 nm . Pa

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In a photoelectric-effect experiment it is observed that nocurrent flows unless the wavelength is less than 520 nm .
Part A. What is the work function of this material? (Unit:eV)
Part B. What is the stopping voltage required if light ofwavelength 450 nm is used (Unit: V)
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