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!

Problem Using Snell's Law

  1. Apr 12, 2009 #1
    1. The problem statement, all variables and given/known data
    The figure (http://i43.tinypic.com/2dt5e2e.jpg") shows a ray of light traveling through a gas (n = 1.00), a solid (n = 1.84), and a liquid (n = 1.61). What is the angle θ made by the ray as it enters the liquid?


    2. Relevant equations
    (n1)(sin θ1)=(n2)(sin θ2)


    3. The attempt at a solution
    (1.00) (sin 90-35) = (1.84) (sin θ)
    θ = 26.4 degrees

    (1.84) (sin 26.4) = (1.61) (sin θ)
    θ = 30.5 degrees
     
    Last edited by a moderator: Apr 24, 2017
  2. jcsd
  3. Apr 12, 2009 #2

    rl.bhat

    User Avatar
    Homework Helper

    (1.00) (sin 90-35) = (1.84) (sin θ)
    This is wrong. The angle of incidence is the angle made on the incident ray with the normal.
     
  4. Apr 12, 2009 #3
    Would I just use sin 35 then? I'm confused. :frown:
     
  5. Apr 12, 2009 #4

    rl.bhat

    User Avatar
    Homework Helper

  6. Apr 12, 2009 #5
    Thanks! I'll try it again:

    (1.00) (sin 35) = (1.84) (sin θ)
    θ = 18.2 degrees

    (1.84) (sin 18.2) = (1.61) (sin θ)
    θ = 20.9 degrees
     
  7. Apr 12, 2009 #6

    rl.bhat

    User Avatar
    Homework Helper

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




Similar Discussions: Problem Using Snell's Law
  1. Snells Law problems. (Replies: 10)

  2. Snell's Law Problem (Replies: 1)

  3. Snell's Law Problem (Replies: 3)

  4. Snell's Law problem (Replies: 12)

Loading...