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Lesson: The Photoelectric Effect

Investigate the relationship between the wavelength of electromagnetic radiation absorbed by and the kinetic energy of electrons ejected from different substances by the photoelectric effect.

Worksheet: The Photoelectric Effect • 10 Questions

Q1:

Silver has a work function of 4.73 eV. What is the longest wavelength of radiation that can eject a photoelectron from silver?

Q2:

The work function of a photoelectrode is 4.73 eV. Find the maximum velocity of photoelectrons ejected from the photoelectrode by 80.0-nm radiation.

A m/s
B m/s
C m/s
D m/s
E m/s

Q3:

Ultraviolet radiation of wavelength m illuminates a gold-plated electrode. What is the maximum kinetic energy of photoelectrons ejected from the electrode?

Q4:

Photons of wavelength’s greater than 337 nm cannot eject photoelectrons from a magnesium photoelectrode. What is the work function of magnesium?

Q5:

Electromagnetic radiation ejects 2.00-eV electrons from a calcium electrode that has a work function of 2.71 eV. What is the wavelength of the radiation?

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