Test your knowledge:

1. Which photon would have a higher energy: red or blue?
2. Which (red or blue) would require a larger stopping voltage?
3. What is the general relationship between photon frequency and stopping voltage?
4. What is the relationship between photon wavelength and stopping voltage?
5. Does changing the intensity affect the stopping voltage? Why or why not?
6. Why does changing the intensity affect the time taken to reach the stopping voltage?
7. Does the photoelectric effect demonstrate the wave or particle nature of light? How?
8. Did any part of this experiment require light to behave as a wave? Which part?

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