Lesson: Total Internal ReflectionPhysics
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
At what minimum angle will you get total internal reflection of light traveling in water and reflected from ice? Use a value of 1.309 for the refractive index of ice and use a value of 1.333 for the refractive index of water.
Light rays, initially in air, are normally incident on the vertical surface of a glass prism, as shown in the accompanying diagram. The prism has a refractive index of 1.50. The slanted face of the prism is aligned at an angle above the horizontal.
What is the largest value for such that an incident ray is totally reflected at the slanted face?
The prism is immersed in water. Find the largest value for such that the ray is totally reflected at the slanted face. Use a value of 1.333 for the refractive index of water.
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?