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4 years ago

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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