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!

Photons emitted between energy levels?

  1. Apr 3, 2015 #1


    User Avatar

    See photo attachment! (question 1(b) and see answer on mark scheme underneath)

    How can three photons be emitted? Either the electron drops down from 3 to 1 and skips 2 emitting one big 12.1 eV photon OR it falls down in step emitting two photons 1.9eV and 10.2eV. How can it emit more energy than its been given anyway?


    Attached Files:

  2. jcsd
  3. Apr 3, 2015 #2


    User Avatar

    Staff: Mentor

    The question is not well formulated. It isn't that a single collision with a single atom will give off three photons, but rather that following the collision three possible photon energies can be observed.
  4. Apr 3, 2015 #3


    User Avatar

    Exactly what I thought, just cheaking... thanks
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook