Problem: You need to design a photodetector that can respond to the entire range of visible light.What is the maximum possible work function of the cathode?

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Work function:

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The detector should be able to detect the least energy photons.

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Problem Details

You need to design a photodetector that can respond to the entire range of visible light.

What is the maximum possible work function of the cathode?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Photoelectric Effect concept. If you need more Photoelectric Effect practice, you can also practice Photoelectric Effect practice problems.