Practice Quiz

Praxis II General Science

Category - Physics

Start a Study Session Sign up for Question of the Day
The index of refraction for air is 1. If light passing through air hits an object with an index of refraction of 0.8 at an angle of 30 degrees, which of the following equations can be used to solve for the degree at which the light is refracted?
  1. cos(x) = 0.875
  2. sin(x) = 0.875
  3. cos(x) = 0.625
  4. sin(x) = 0.625
  5. tan(x) = 0.750
Explanation
Answer: D - According to Snell’s law, (sin θ1)/(sinθ2) = n2/n1. Thus, sin(x) = sin(30)/0.8. Sin(30) is 0.5. Thus, sin(x) = 0.625, which is the equation that can be used to solve for the problem. If we solve for x we gain an answer of 31.8 degrees, rounded to 32.
Was this helpful? Upvote!
Login to contribute your own answer or details
Start a Study Session Sign up for Question of the Day

Top questions

Related questions

Most popular on PracticeQuiz