# Ch 14: Basics of Optics

### About This Chapter

## Basics of Optics - Chapter Summary

Review the basics of optics with this comprehensive online physics chapter. Using an engaging and simplified teaching approach, our expert instructors define fundamental mirror and lens equations, related optics laws and the concept of thin film interference. You'll be able to practice solving optics problems on your own by taking the included self-assessment quizzes. Work through the chapter at your own pace, and submit questions to our instructors if you have any. When you're finished, you should be able to:

- Differentiate between plane and spherical mirrors
- Describe ray tracing with mirrors
- Solve mirror and lens problems using relevant equations
- Apply the thin lens equation
- Summarize Malus' law and Brewster's law
- Tell how thin film interference works

### 1. Mirrors: Difference Between Plane & Spherical

After watching this lesson, you will be able to explain what a mirror is and how plane mirrors and spherical mirrors are different, including the images they produce. A short quiz will follow.

### 2. Ray Tracing with Mirrors: Reflected Images

After watching this lesson, you will be able to explain what a mirror is and use ray tracing diagrams, along with the law of reflection, to explain what you see when you look in a mirror. A short quiz will follow.

### 3. Using Equations to Answer Mirror Questions

After watching this lesson, you will be able to answer questions on mirrors, stating whether an image is real or virtual, upright or inverted, and larger or smaller. A short quiz will follow.

### 4. Thin Lens Equation: Examples & Questions

After watching this lesson, you will be able to explain what a lens is (both concave and convex), list uses of lenses in everyday life, and use the thin lens equation to solve problems. A short quiz will follow.

### 5. Using Equations to Answer Lens Questions

After watching this video, you should be able to use equations to answer lens questions, including figuring out whether the image produced by a lens is real or virtual, bigger or smaller, and upright or inverted. A short quiz will follow.

### 6. Polarization of Light & Malus's Law

After watching this video, you will be able to explain what polarization of light is, list a number of examples of how polarization of light is used, state Malus's Law, and use it to solve problems involving the intensity of light through a polarizer.

### 7. Polarization by Reflection & Brewster's Law

After watching this lesson, you will be able to explain what polarization by reflection is, give a few examples of polarization in everyday life, explain Brewster's Law descriptively and use the equation to solve problems. A short quiz will follow.

### 8. How Thin Film Interference Works

After watching this video, you will be able to explain how thin film interference works, give examples of thin film interference in everyday life and solve simple problems. A short quiz will follow.

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### Other Chapters

Other chapters within the Physics 101: Intro to Physics course

- Intro to Physics
- Overview of Vectors
- Overview of Kinematics
- Overview of Forces
- Overview of Gravity
- Basics of Newton's First Law
- Basics of Newton's Second Law
- Basics of Newton's Third Law
- Energy and Work in Physics
- Overview of Linear Momentum in Physics
- Basics of Rotational Motion
- Waves in Physics
- Sound & Light in Physics
- Fluid Dynamics in Physics
- Basics of Thermodynamics in Physics
- Overview of Electrostatics
- Overview of Magnetism
- Basics of Nuclear Physics
- Studying for Physics 101