Now consider a 3^rd electromagnetic wave, E_3. According to the wave model, whic
ID: 1649266 • Letter: N
Question
Now consider a 3^rd electromagnetic wave, E_3. According to the wave model, which wave (E_1 or E_2) is more likely to free an electron from a metal? (Discuss in terms of force, intensity and time). Explain. According to the wave model, which electromagnetic wave (E_1 or E_2) is more likely to free an electron from a metal? (Discuss in terms of force, intensity and time). Explain. According to the photon model for light, will photons coming from E_1 or E_2 be more likely to free electrons from a metal? (Discuss in terms of force, intensity and time). Explain. Which model of light do experiments agree? Clearly state any glaring discrepancies in the two models. Explain.Explanation / Answer
Hey buddy,
The graph of E2 wave is missing so I will be able to answer the question involving E1 and E3 only. Kindly repost the question with E2 wave plot for better assistance.
Answer for according to wave model...
When the wave interacts with the metal then it transfers its energy to electron and if the energy transferred is greater than or equal to the work function (ninimum energy required for exit if electron) then the electron is emitted.
Here, frequency , v3 , of E3 is higher. v3> v1 (As no. of cycles in 1 second time is higher for E3)
So, by E= hv, Energy of E3 would be higher so when E3 interacts with metals then the energy transmitted would be more and thus is more likely for emision of electron.
Intensity basically means the energy per unit area iin wave model and in particle nature it is proportional to the no. of photons. But the emission of electrons from the metal surface is not dependent on the no. of photons but on the energy of photons.
Note: Actually the wave model of light was not able to explain the emission of electron from the metal surface.It was Einstein who came up with the particle nature of light to explain this( photoelectric effect), thus establishing the dual nature of light.
Please feel free to reach out for further clarifications.
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