Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Photoelectric effect

  1. Nov 18, 2005 #1

    from my understanding of the photo electric effect, the minimum workfunction must be met before electrons are emitted prior to that, intensity doesnt play a part. if the frequency is increased to juz above the work function and stays constant there and i increase the intensity shouldnt the current detected be constant and the number of electrons emitted per second is the same?
  2. jcsd
  3. Nov 18, 2005 #2


    User Avatar
    Gold Member

    If the photons hitting the metal have enough energy to emit photons then the bigger the intensity the bigger the current. Cause more intensity means that more photons are hitting the metal. That means that more electrons are emitted: I = q/t
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook