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anonymous
 one year ago
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
?
anonymous
 one year ago
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 ?

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1we have to apply the law of Snell

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433267112100:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1\[\Large {n_{air}}\sin {\theta _{air}} = {n_{glass}}\sin {\theta _{glass}}\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so we can write: \[\Large 1 \times \sin 30 = 1.52 \times \sin {\theta _{glass}}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0solving for sin theta glass?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! \[\Large \sin {\theta _{glass}} = \frac{1}{{2 \times 1.52}} = ...\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1what is: arcsin(0.329)=...?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yay!! so our solution is 19 degrees?
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