Lenses

• A converging lens is always convex.
• A diverging lens is always concave.
• A real image is an image that can be projected. It is only formed if the object is further than the focal point of the lens.
• Converging lenses are used in magnifying glasses and cameras.
• Diverging lenses are used to correct short-sighted people.
• What does letter A represent?

  Focal point

  
• What does letter B represent?

  Light rays parallel to the lens

  
• What does letter A represent?

  Focal point

  
• Magnification= image height / object height