Go to phet.Colorado.edu/en/simulation/photoelectric

19) Part 2: Visible (red) light 1) Set the intensity back to 1% 2) Unselect the graph: Electron energy vs light frequency 3) Now select the graph, again: | Electron energy vs light frequency 4) Move the color of light up to the red end (around 700 nm). Write down the value you chose: 5) Calculate the frequency of this color light and write your answer here (units too!): 6) Calculate the energy of these photons and write your answer here (units too!): 7) Looking at the graph (right side) write down the value of the frequency of the light (units too!) feel free to use the zoom button