MIRRORS AND LENSES

Cards (15)

  • Reflection is a property of light that occurs when light bounces back as it hits a surface.
  • The angle of incidence is the angle between the incident ray and the normal line.
  • When the light strikes a smooth surface, regular reflection happens.
  • When the incident light rays strike a rough surface, light is reflected in many directions while still following the law of reflection. As a result, diffused reflection happens
  • Mirrors are reflective surfaces made up of glass.
  • Plane mirrors are flat surfaces that reflect light and form an image of an object brought in front of it.
  • Virtual images are those formed behind the mirror.
  • Mirrors can be either plane mirrors or curved mirrors.
  • Curved mirrors can be either concave or convex.
  • Convex mirrors have their reflective surfaces bent outward
  • concave mirrors have their reflective surfaces bent inward.
  • The line cutting through the center is called the principal axis.
  • The center of the sphere from which the mirror is taken is the center of curvature (c)
  • The midpoint of the radius of curvature is the focus (f)
  • Characteristics of a plane mirror:
    • forms virtual image
    • laterally inverted
    • same size
    • same distance
    • upright/erect