Lesson: Total Internal Reflection

In this lesson, we will learn how to define total internal reflection (TIR) by describing rays produced by light rays incident at or past the critical angle for TIR.

Video

13:49

Sample Question Videos

02:42

Worksheet: 10 Questions • 1 Video

Q1:

The rays , , and are shown incident on a boundary between water and air, traveling in water. Which incident ray produces total internal reflection?

Q2:

Which of the following definitions best describes the critical angle for total internal reflection?

Q3:

Which of the following sets of conditions best describes total internal reflection?

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