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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.
Q1:
A graph of the incident angle and the refracted angle is shown for a light ray moving through an object. Which of the points , , , , and is closest to the correctly plotted position for an incident angle of 65 degrees?
Q2:
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.
Q3:
A light ray traveling in water is incident on the flat surface of a glass block, hitting the surface at an angle of 45 degrees from the line normal to it. The refracted ray in the block travels at an angle of 37.8 degrees to the line normal to the surface. What is the refractive index of the glass? Use a value of 1.3 for the refractive index of water.
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