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!

Energy of incident of light to amplitude of light?

  1. Aug 19, 2012 #1
    1. The problem statement, all variables and given/known data
    A sheet of glass transmit 70% of the energy of the incident light
    What is the value of the quantity: (Amplitude of transmitted light) / (Amplitude of incident light)
    A:0.49
    B:0.70
    C:0.84
    D:1.19


    2. Relevant equations
    Intensity is proportional to amplitude square.



    3. The attempt at a solution
    I tried relating to the above equation but i got 0.7^2/1^2=0.49 (A) but answer is not A...
     
  2. jcsd
  3. Aug 19, 2012 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Why did you square the ratio of intensities?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Energy of incident of light to amplitude of light?
Loading...