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Number of photons emitted between transitions

  1. Dec 9, 2006 #1
    1. The problem statement, all variables and given/known data
    # When an electron jumps from n = 4 level to n = 1 level(ground state), the number of photons emitted is:
    a) 1
    b) 3
    c) 4
    d) 2


    2. Relevant equations



    3. The attempt at a solution

    If the electron first moves from n = 4 to n = 3, then to n = 2 and then finally to n = 1 level then 3 photons are emitted. Similarly it can be 2 photons if the successive transitions are 4-->2-->1 or 4-->3-->1. It can be 1 if the transition is 4-->1. So are the suitable answers (a),(b) & (c)?
     
  2. jcsd
  3. Dec 9, 2006 #2

    OlderDan

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    Science Advisor
    Homework Helper

    I think jumps from n = 4 to n = 1 means one transition, not a series of transitions.
     
  4. Dec 9, 2006 #3
    Indeed, and normally not all such transition states are allowed...

    marlon
     
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