Question #2cd23

1 Answer
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

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°#.