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!

Revolutions in a Bohr Model

  1. Apr 12, 2005 #1
    According to the Bohr theory, how many revolutions will an electron make in the first excited state of hydrogen if the lifetime in that state is 10^-8?

    Basically do I find the speed of the that the electron moves in this excited state then get the distance that a revolution is and divide it by the time?
  2. jcsd
  3. Apr 12, 2005 #2


    User Avatar
    Science Advisor
    Homework Helper

    Find the period for the first orbit and then use [itex]10^{-8}s [/itex] and the following reasoning

    1 revolution---------------------------->T

    x revolutions---------------------------->10^{-8}s

    Last edited: Apr 12, 2005
  4. Apr 13, 2005 #3
    Right. When finding the period do I take velocity to be the speed of light?
  5. Apr 13, 2005 #4


    User Avatar
    Science Advisor
    Homework Helper

    No,the velocity on the first orbit

    [tex] v_{I}=\alpha c [/tex]

    ,where [itex] \alpha [/itex] is the fine structure constant...

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

Have something to add?

Similar Discussions: Revolutions in a Bohr Model
  1. Bohr's Model (Replies: 2)

  2. The bohr model (Replies: 1)

  3. Bohr Model (Replies: 1)

  4. Bohr Model (Replies: 3)

  5. Bohr's model. (Replies: 1)