Glass has an index refraction of 1.52. A ray of light is shone from air into glass so that the angle of incidence is 18.0 degrees. Calculate the angle of refraction.

Question

Glass has an index refraction of 1.52. A ray of light is shone from air into glass so that the angle of incidence is 18.0 degrees. Calculate the angle of refraction.

Please include a detailed and understandable answer for a Grade 11. Thanks :)

Answer 1

Just use the Snell's law n = sin Θ_i / sin Θ_r . Then sin of angle of refraction

sin Θ_r = sin Θ_i / n.

Could you do the math on your own?

sin Θ_r = sin 18° / 1.52 =

And then find the angle of refraction.