1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
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 Problems

  1. Nov 17, 2013 #1
    Grade 12 physics help. Any help would be greatly apprecitated. Thanks

    1. A light source with a wavelength of 550 nm shines on photocells, each with a work function of 1.60 eV. What is the minimum number of photocells required to generate 5.25 ´ 10-19 J of energy?

    2. Light with a frequency of 8.00 ´ 1014 Hz is incident on a photosensitive metal, resulting in the emission of photoelectrons with a speed of 2.55 ´ 105 m/s. The work function of this photosensitive metal is _____ eV.

    3. Light with a wavelength of 350 nm is incident on a metal with a work function of 2.00 eV. The shortest de Broglie wavelength for the photoelectrons that are emitted
  2. jcsd
  3. Nov 18, 2013 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Please show your attempts to solve them. It's the way the forum works.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted