Frustrated Total Internal Reflection


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question 1 of 3

To understand how both frustrated and normal total internal reflection work we need to know Snell's law. What is the formula for Snell's law?

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1. What are the conditions for total internal reflection that must be met for a light ray to be reflected instead of refracted like normal?

2. When light travels from one medium into another it can either be reflected, refracted, or absorbed. What happens to light under frustrated total internal reflection conditions?

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About This Quiz & Worksheet

See what you know about frustrated TIR by using the quiz and worksheet. Terms like internal reflection, refraction and evanescent are on the quiz.

Quiz & Worksheet Goals

You will be tested over:

  • Conditions that must be met for frustrated total internal reflection to happen
  • Property that causes evanescent waves to disappear
  • Formula for Snell's Law
  • What happens to light under frustrated total internal reflection conditions

Skills Practiced

  • Making connections - use understanding of the concept of Snell's Law and know how to plug values into its fomula
  • Information recall - retrieve the knowledge you gained about the conditions that have to be met for frustrated total internal reflection to occur
  • Interpreting information - verify that you can read information about the property that causes evanescent waves to go away quickly and interpret it correctly

Additional Learning

Explore the lesson called Frustrated Total Internal Reflection to review additional topics, including:

  • Applying the concept of TIR to fiber optic cables
  • Characteristics of light when it travels through two different objects
  • Using Snell's Law
  • The critical angle