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
Worksheet: 21 Questions • 1 Video
How many photoelectrons per second are ejected?
What net power is carried away by the ejected photoelectrons?
Determine the work function of the surface.
Determine the cutoff frequency of the surface.
What is the stopping potential when the surface is illuminated with light of wavelength 400 nm?
How many photoelectrons leave the calcium surface per second?
What power is carried away by the ejected photoelectrons?
Calculate the photocurrent provided by the ejected photoelectrons.
If the photoelectrode suddenly becomes electrically insulated and the setup of two electrodes in the circuit suddenly starts to act like a 2.00-pF capacitor, how long will a photelectric current be maintained before the capacitor voltage stops it?