anonymous
  • anonymous
Suppose a beam of red light enters a plate of crown glass at an angle of incidence of 30 degrees. What is its angel of refraction? **will draw inside!** 19 degrees, 25 degrees, 30 degrees, or 78 degrees ?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Michele_Laino
  • Michele_Laino
we have to apply the law of Snell
anonymous
  • anonymous
|dw:1433267112100:dw|
Michele_Laino
  • Michele_Laino
\[\Large {n_{air}}\sin {\theta _{air}} = {n_{glass}}\sin {\theta _{glass}}\]

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Michele_Laino
  • Michele_Laino
so we can write: \[\Large 1 \times \sin 30 = 1.52 \times \sin {\theta _{glass}}\]
anonymous
  • anonymous
solving for sin theta glass?
Michele_Laino
  • Michele_Laino
yes! \[\Large \sin {\theta _{glass}} = \frac{1}{{2 \times 1.52}} = ...\]
anonymous
  • anonymous
0.3289 ?
Michele_Laino
  • Michele_Laino
what is: arcsin(0.329)=...?
anonymous
  • anonymous
19.2
Michele_Laino
  • Michele_Laino
that's right!
anonymous
  • anonymous
Yay!! so our solution is 19 degrees?
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
Yup!:)
anonymous
  • anonymous
thank you1!:)
Michele_Laino
  • Michele_Laino
:)
anonymous
  • anonymous
Welcome!:)

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