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!

De Broglie wavelength question

  1. Apr 4, 2009 #1
    1. The problem statement, all variables and given/known data

    In one of the classes, a recent experiment showing the interference of C60 molecules using a double slit apparatus was discussed.

    (a) If the average velocity of the C60 molecules is v= 200 m/s, calculate the De Broglie wavelength for a C60 molecule

    2. Relevant equations

    lamda = h / p

    where p = mv

    3. The attempt at a solution

    so m = 12 x 60 / 1000 to convert into kilograms.

    p = m x v = 144

    lamda = 6.63 x 10^-34 J.s / 144 kg m/s= 4.604 x 10^-36 m

    Now that does not seem right because you can hardly see a wavelength that small. Is something wrong with what I have done.

    Thanks.
     
  2. jcsd
  3. Apr 4, 2009 #2

    rl.bhat

    User Avatar
    Homework Helper

    Calculation of mass of C60 is wrong.
    It is 12X60 amu.
    1 amu = ...kg ?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: De Broglie wavelength question
  1. De broglie wavelength (Replies: 2)

Loading...