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 wavelength of a 83 keV photon?

  1. Jan 16, 2006 #1
    What is the wavelength of a 83 keV photon?

    does it matter whether or not you convert to eVs? or can it remain keV?

    i have it as 83000eVs=6.6E-34*3E8/lambda
  2. jcsd
  3. Jan 16, 2006 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Think about it. What is one of the things that the proportionality constant (Planck's constant in this case) does? Make the units work out. So it has to be the version of Planck's constant that is expressed in the right units to do so, not J*s in this case, but eV*s. Well, if it isn't, then convert it.

    Edit: Oh, that wasn't your question, but from the looks of it, it's a good thing I brought it up. Take a look at the constant you are using.
  4. Jan 16, 2006 #3
    ya that helped ty

    wavelength is 4.99 E-20
    Last edited: Jan 16, 2006
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?