2. (?? pts) The apparatus shown below was set up to investigate the photoelectric effect. Using this apparatus, it is fo

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2 Pts The Apparatus Shown Below Was Set Up To Investigate The Photoelectric Effect Using This Apparatus It Is Fo 1 (80.44 KiB) Viewed 25 times

2. (?? pts) The apparatus shown below was set up to investigate the photoelectric effect. Using this apparatus, it is found that light of wavelength 254 nm ejects photoelectrons from a silver plate. The work function of the silver surface is 4.70 eV. A) Calculate the energy, in eV, of a single photon of light of wavelength 254 nm. B) What is the kinetic energy, in eV, of the fastest moving photoelectrons ejected by light of 254 nm? C) Briefly explain what the battery is used for in this experiment. KEmax (ev) D) Plot the data point from parts A and B on the graph provided. Assuming that you can change the wavelength of the light to 220 nm, 160 nm, and 130 nm, what does the plot look like? Is the data linear? Frequency (Hz) E) What would change about the plot if the cathode was changed to magnesium, which has a work function of 3.66 eV? F) What would change about the plot if the intensity of the light was doubled? photo electron + silver plate battery XHKA ⑥ light vacuum HA