🔖 Topics

  • Ideal lenses
  • Lens makers equation
  • Focal length
  • Object distance and image distance
  • Magnification

🎯 Objectives

  • Describe the properties of an ideal mirror
  • Calculate the properties of images formed by an ideal mirror

📋 Sequence

We will cover converging and diverging lenses, touching on the following details:

  • Positive / negative conventions
  • Object further out than the focal point
  • Object closer in than the focal point
  • Object at the focal point

🖥️ Animations, Simulations, Activities

N/A

📝 Practice Problems

For each of the problems below, sketch out a ray diagram of the system before doing any calculations.

  1. An object is placed 10 cm in front of a converging lens with a focal length of 25 cm. What is the image distance from the lens? Is it in front of or behind the lens?
  2. An object is placed 30 cm in front of a diverging lens with a focal length of 10 cm. What is the magnification of the final image?
  3. An object is placed 45 cm in front of a converging lens with a focal length of 50 cm. What is the magnification of the final image?

✅ Partial Solutions

N/A

📘 Connected Resources

  • Giambattista, Alan, et al. College Physics With an Integrated Approach to Forces and Kinematics. 5th ed., McGraw-Hill Education, 2020.
  • Tipler, Paul A., and Gene Mosca. Physics for Scientists and Engineers: With Modern Physics. 6th ed., W. H. Freeman, 2008.