The following data were obtained on electron kinetic energies ejected in studyin

Question

The following data were obtained on electron kinetic energies ejected in studying the photoelectric effect from a potassium metal surface. Use Excel or Wolframalpha to evaluate the potassium work function and the Planck constant. Remember to first convert wavelength to energy 4. Electron kinetic energies (x 10-19 J) 1.34 0.700 0.311 | 400 | 450 | 500 4.49 3.09 1.89 | Incident (nm) | 300 | 350 250 WolframAlpha Example: linear fit 11.3, 2.2,,12.1, 5.8), 13.7, 10.23,14.2, 11.8) https://w wywolframalpha.com/1nput/?i_linear-fit+%7B | 3.+220 7D%7B2 1-58 %7D%7B3.7.+102%TD%7B4 2.+11 ,8007D Which aspect of photoelectric effect demonstrates that light can have particle-like behavior?

Explanation / Answer

Quantum theory's explanations :

(1). Let N be the amount of photons falling on metal plate per unit space per unit time then,

N=IA/h
Now, if we have a tendency to double the intensity, we have a tendency to double the amount of photons thatconsequently doubles the photocurrent. this is often relinquished dynamical the energy of the individual gauge boson.

Hence, mechanical energy doesn'tincrease after you double the intensity of sunshine (keeping energy of individual gauge boson constant).

(2). The second drawback may beexplained if we have a tendency tocontemplate the case KEmax=0KEmax=0. during this case we've,

Workfunction ()=hWorkfunction ()=h.

This tells that the gauge boson has only enough to eject the photoelectrons and no additional energy seem as mechanical energy.

If frequency is reduced below threshold frequency ()(), no photoelectrons are going to be ejected intense the radiation is also.

Remember that, the intensity of radiation may be exaggerated by either increasing the amount of gauge bosons in it or by increasing the energy of every photon.

(3). The third brain-teaser follows from the gauge boson theory as a result of the desired energy is provided in an exceedingly targeted bundles of energy (i.e photons).

Energy isn't unfold uniformly over the beam's cross section as in undulatory theory.

The ejection of photoelectrons is instant. The time distinction between incidence of sunshine and emission of photoelectrons terribly|is extremely|is incredibly} very little, is also even but109s109s.

ConclusionConclusion : In physical phenomenon impact lightweight exhibits its particle nature. +1 for gauge boson.

Gauge boson are photons

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