1. Not finding help here? Sign up for a free 30min 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!

What is the stoping voltage

  1. Jul 12, 2005 #1
    Hi everyone.

    I came across with a problem in my question book which was

    "what is the stoping voltage when a UV ligh with WaveLength 200nm hits a clean gold surface.(5.1v Work Function.)"


    I have found the frequency which is [tex]1.5^15 Hz[/tex] I know the [tex]W[/tex] Therefore I can let [tex]Ekmax=(hf)-W[/tex] and [tex]Ekmax=qV[/tex]

    But when I put the equations together they dont make any sence to me.
    [tex]V=\frac{(hf)-W}{q}[/tex]

    Can someone help me through this plz
     
  2. jcsd
  3. Jul 12, 2005 #2

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    1.You should have posted this in the homework section.

    2.Why don't they make any sense?

    It looks okay so far.

    Daniel.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: What is the stoping voltage
  1. What is ramp voltage? (Replies: 2)

Loading...