Lesson: Total Internal Reflection
In this lesson, we will learn how to calculate the critical angle for total internal reflection at the interface between two materials with different refractive indices.
Sample Question Videos
Worksheet: 8 Questions • 2 Videos
The critical angle for light passing from diamond (refractive index of 2.42) to air (refractive index of 1.00) is . Zircon has a refractive index of 1.92. What is the critical angle for light passing from zircon to air?
What is the refractive index of the substance?
Air has a refractive index of 1.00. What would be the critical angle for this substance in air?
A light ray is propagating in water. Find the critical angle for the ray incident on an interface between air and water. Use a value of 1.33 for the refractive index of water.