In a photoelectric experiment on the metal copper, the following values of the stopping potential V0 were obtained at different wavelengths (lambda) of the incident ultraviolet light (see attached file for experiment values).
a. Use a graphical method to determine a value for the work function of copper.
b. Find the maximum velocity of an ejected electron if the copper surface is illuminated by radiation with a wavelength of 122nm, the longest wavelength line of the Lyman series (transitions to n=1) of hydrogen.
This solution uses the graphical method and step-by-step calculations to determine the work function of copper and calculates the maximum velocity of the ejected electron. All workings and formulas are shown on an Excel spreadsheet.