Physics Weekly

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Chapter 28: Reflection and Refraction
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Judith S. de Nuño
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Chapter Objectives:

  • Describe what happens to light when it strikes different materials.
  • Describe the law of reflection.
  • Explain why a mirror forms a virtual image.
  • Describe diffuse reflection.
  • Give examples of ways to control reflected sound.
  • Explain the change in direction of a wave when it crosses a boundary between media.
  • Describe the effects of refraction of sound waves.
  • Describe the effects of refraction of light.
  • Explain how mirages are formed.
  • Explain how a prism separates white light into colors.
  • Describe how a rainbow is formed.
  • Describe total internal reflection, its effects, and its applications.

Chapter Terms:

  • reflection
  • refraction
  • Fermat's principle of least time
  • law of reflection
  • diffuse reflecton
  • critical angle
  • total internal reflection
  • converging lens
  • diverging lens
  • virtual image
  • real image
  • aberration

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Chapter Outline Framework:

  • Reflection
  • {romco[;ef :Least Time
  • Law of Reflection
    • Plane Mirrors
    • Diffuse Reflection
  • Refraction
  • cause of Refraction
    • Dispersion
    • Rainbows
  • Total Internal Refraction
  • Lenses
    • Image Formation by a Lens

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