 Featured in PASCO’s Advanced Physics Teacher Guide

#### Advanced Physics Teacher Guide

(PS-2879C) This manual features over 30 College Board curriculum and AP Physics exam inspired lab activities.

### Index of Refraction

#### Lab Summary

Use a basic optics kit to determine the index of refraction of a D-shaped acrylic lens.

#### Theory

Given a D-shaped acrylic lens with unknown index of refraction, experimentally determine a value for the correct index of refraction using the equipment provided and the necessary relevant equations.

• Build a fundamental understanding of Snell's law and how it applies to objects of different index of refraction.
• Implement linearization techniques to simply complex mathematical relationships.

#### Method

Students gain experience conducting the following procedures:

• Setting up the light source so that it is incident upon the flat surface of the acrylic D-shaped lens.
• Rotating the lens and measuring the angle of incidence and the angle of refraction.
• Creating a linearized graph by plotting the sine of the refracted angles versus the sine of the incident angles.
• Using the slope of the graph to determine the index of refraction.

#### Basic Optics System

(OS-8515C) A group of components designed to allow students conduct various optical experiments.

#### Advanced Physics Standard Sensor Bundle

(PS-2932B) This bundle contains the probeware needed to perform all 37 lab activities in the Advanced Physics lab manual.

### Interface Required

This experiment may require software and an interface for data collection.