Question

Question #2cd23

Answer 1

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`.

[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`

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°`.