For this problem, we have to determine which observation corresponds to which wavelength of light
Recall that the energy of a photon is given by:
We can see that energy and frequency are directly proportional. The energy in a transition also depends on the distance between the energy levels.
We shine light of three different wavelengths—325 nm, 455 nm, and 632 nm —on a metal surface. We record the following observations for each wavelength, labeled A, B, and C:
Observation A: No photoelectrons were observed.
Observation B: Photoelectrons with a kinetic energy of 155 kJ/mol were observed
Observation C: Photoelectrons with a kinetic energy of 51 kJ/mol were observed
Which observation corresponds to which wavelength of light?
Frequently Asked Questions
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. You can view video lessons to learn Photoelectric Effect. Or if you need more Photoelectric Effect practice, you can also practice Photoelectric Effect practice problems.
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Based on our data, we think this problem is relevant for Professor Todd's class at VANDERBILT.