Homework Help: Law of Refraction question

haitianstudent · Sep 9, 2013

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

ehild · Sep 9, 2013

haitianstudent said: ↑

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.

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

Would you please show your work in detail?

ehild

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Homework Help: Law of Refraction question

haitianstudent

ehild