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Ierofanga [76]
4 years ago
11

If the incoming photon had a frequency of 8.0 E14 Hz, would you have a photo-electron ejected?

Physics
1 answer:
cupoosta [38]4 years ago
4 0

Yes.


In fact, from the graph we see that the threshold frequency (the minimum energy of the incoming energy needed to extract a photoelectron from the material) is 5.0 \cdot 10^{14} Hz (we see it because this is the frequency at which the maximum kinetic energy of the emitted electron is zero).


The incoming photon in this problem has a frequency of 8.0 E14 Hz, so above the threshold frequency, therefore it is enough to extract photoelectrons from the material.

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