PHYS 6C Final: Physics 6C Final Practice Solutions
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An easy way to do this one is to find the frequency of a photon that has an energy of 2. 28 ev. Now we just have to realize that any photon with a higher frequency will have more energy, and will also eject electrons. Use the following information for problems 1 and 2. We use the most energetic photon available the one with the highest frequency. Its energy will be higher than the work function, and the difference will be the leftover ke. Assistance services at ucsb: when light of a particular wavelength and intensity shines on the surface of a given metal, no electrons are ejected. Which of the following changes will most likely cause the emission of photoelectrons: decreasing the frequency of the light, increasing the intensity of the light, decreasing the wavelength of the light, increasing the wavelength of the light. In order for electrons to be ejected, the photons have to have more energy.
