Lesson: Refraction of Light

In this lesson, we will learn how to describe refraction as the speed and direction change of light when passing between media of different densities.

Video

15:06

Sample Question Videos

06:21
04:09
05:58

Worksheet: 22 Questions • 3 Videos

Q1:

A light ray traveling in water of refractive index 1.3 is incident on the flat surface of a plastic block with a refractive index of 1.6, traveling through the block at an angle of 45 degrees from the line normal to the surface. At what angle from the line normal to the surface does the incident ray strike the block? Answer to the nearest degree.

Q2:

A light ray traveling in water of refractive index 1.3 is incident on the flat surface of a plastic block with a refractive index of 1.7, hitting the surface at an angle of 45 degrees from the line normal to the surface. At what angle from the line normal to the surface does the refracted ray in the block travel? Answer to the nearest degree.

Q3:

A light ray traveling in water with a refractive index of 1.3 is incident on a flat boundary with air, hitting the boundary at an angle of 45 degrees from the line normal to the boundary. At what angle from the line normal to the boundary does the refracted ray in the air travel? Answer to the nearest degree.

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