Ray Diagrams

• What are ray diagrams used for?

  To show the formation of images
• How do ray diagrams illustrate image formation?

  By using convex and concave lenses
• How is an image described in ray diagrams?

  As 'real' if it can be projected
• What does it mean for an image to be 'real'?

  It can be projected onto a screen
• What is a 'virtual' image in ray diagrams?

  Projected directly into the observer's eye
• Can a virtual image be projected onto a screen?

  No, it can only be viewed directly
• What type of image is produced by a convex lens?

  Can be either real or virtual
• What type of image is produced by a concave lens?

  Always virtual
• What are the characteristics of images produced by convex and concave lenses?

  • Convex lenses:
  • Can produce real or virtual images
  • Concave lenses:
  • Always produce virtual images
• How are convex lenses represented in ray diagrams?

  By specific symbols and lines
• How are concave lenses represented in ray diagrams?

  By specific symbols and lines
• What is the significance of ray diagrams in optics?

  • Visual representation of image formation
  • Helps in understanding lens behavior
  • Essential for studying optical systems