1. Sep 9, 2013 #1

   haitianstudent

   

   1. The problem statement, all variables and given/known data
   
   There's one angle of incidence β onto a prism for which the light inside an isosceles prism travels parallel to the base and emerges at angle β.
   (Figure 1)
   
   2. Relevant equations
   
   
   Find an expression for β in terms of the prism's apex angle α and index of refraction n.
   http://session.masteringphysics.com/problemAsset/1384202/2/23.P58.jpg
   
   3. The attempt at a solution
   to Use refraction law: n1sin(betta1)=n2sin(betta2). Then express betta2 through alpha. But i am not getting the right answer

    

   haitianstudent, Sep 9, 2013
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3. Sep 9, 2013 #2

   ehild

   

   Homework Helper

   Gold Member

   Would you please show your work in detail?
   
   ehild

    

   ehild, Sep 9, 2013

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