Lesson: The Photoelectric Effect

In this lesson, we will learn how to relate electromagnetic radiation wavelength to the kinetic energy of electrons ejected by it from various materials.

Sample Question Videos

04:16

Worksheet: 21 Questions • 1 Video

Q1:

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

Q2:

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

Q3:

Ultraviolet radiation of wavelength m illuminates a gold-plated electrode. Knowing that the work function of gold is 5.3 eV, what is the maximum kinetic energy of photoelectrons ejected from the electrode?

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