The figure shows the stopping potential versus the incident photon frequency for the photoelectric effect for sodium. Use the graph to find the work function of sodium and the cutoff wavelength.
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The work function forĀ sodiumĀ isĀ 2.46Ā eV.
The work function for platinum is 6.35eV.(a.) Convert value of the work function from electron volts tojoules.(b.) Find the cutoff frequency for platinum.(c.) What maximum wavelength of light incident on platinum releasesphotoelectrons from the platinum's surface?(d.) If light of energy 8.50 eV is incident on zinc, what is themaximum kinetic energy of the ejected photoelectrons? Give theanswer in electron volts.(e.) For photons of energy 8.50 eV, what stopping potential wouldbe required to arrest the current of photoelectrons?
The work function for platinum is 6.35 eV.
(a) Convert the value of the work function from electron volts to joules. J(b) Find the cutoff frequency for platinum. Hz(c) What maximum wavelength of light incident on platinum releases photoelectrons from the platinum's surface? nm(d) If light of energy 8.02 eV is incident on platinum, what is the maximum kinetic energy of the ejected photoelectrons? Give the answer in electron volts. eV(e) For photons of energy 8.02 eV, what stopping potential would be required to arrest the current of photoelectrons? V
