Question #2cd23

1 Answer
yumean1119
Jan 12, 2018

See the explanation.

Explanation:

[Sample Question] There is an interface of air and water, and light traveles toward the water.
If the angle of incidence is 45°, what is the angle of refraction?
Assume the relative refractive index of water is 1.33.
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[How to solve?]
Using Snell's law helps you with these types of questions.

sintheta_1/(sintheta_2) =v_1/v_2 = λ_1/λ_2 = n_2/n_1
![https://en.wikipedia.org/wiki/Snell%27s_law](useruploads.socratic.org)

In the sample question, substitute θ_1=45°, n_1=1.00 and n_2=1.33.

(sin45°)/(sinθ_2) =1.33/1.00
sinθ_2=(sin45°)/1.33=1/sqrt(2) * 1/1.33 = 0.532
θ_2=32°.

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