G10 W6: Images formed by the mirror

• Is a bouncing off light Ray when it hit a surface in a smooth surface


  Reflection
• Describe the images in plane mirror

  Upright

  Same size and shape

  Same distance of image and object

  Virtual
• What does it mean when plane mirror is virtual?

  A light Ray do not actually produce by an object
• Is an image which is formed when the light Ray intersect each other

  Real Image
• Where real image can be obtained?

  Screen like cinema screen
• The image in real image is always?

  Inverted
• The Ray of light approaching an optical element like mirror and is represented in arrow pointed toward the mirror


  Incident ray
• The Ray which leaves the mirror and is represented by an arrow pointed away the mirror

  Reflected ray
• An imaginary line that can be drawn perpendicular to the surface of the mirror at the point of incident


  Normal line
• What do you call the angle formed between incident Ray and normal line

  Angle of incedence
• What do you call the angle produce by the reflected Ray and normal line?

  Angle of reflection
• Reflection of light on smooth surface


  Specular or regukar
• Example of specular or regular?

  Regular Ray reflect in one direction

  Mayon volcano reflection on calm water
• Reflection of light on Rought surface


  Irregular or diffused
• Example of irregular or diffused?

  Wavy water

  Paper

  Clothing

  Asphalt roadway
• It is a reflection surface which surface is a section of sphere


  Curve mirror
• Concave mirror


  ● reflected surface bulges away from the light source

  ● It is called converging mirror because the parallel incident rays intersect at focal point

  ● It can be Real or Virtual: smaller, bigger, same size, upright or inverted
• Convext Mirror


  ● reflected surface bulges toward the light source

  ● It is called diverging mirror because the parallel incident diverse after reflection. When extended, the Ray intersect behind the mirror

  ● it is virtual, upright, smaller
• How different images can be formed?

  By changing the position of an object in concave mirror
• What happen when an object is in Infinity?


  Location: image form at the focus

  Orientation: inverted

  Size: smaller

  Type: real
• What happen when an object is place behind the center of curvature?


  Location: between curvature and focus

  Orientation: inverted

  Size: smaller

  Type: real
• What happen when an object is place between curvature and focus?


  Location: behind the curvature

  Orientation: inverted

  Size: larger

  Type: real
• What happen when an object is place between the focus and vertex?


  Location: behind the mirror

  Orientation: upright

  Size: larger

  Type: virtual
• Describe the image form in convex mirror?

  Always virtual and upright
• What happen when an object is place at infinity?

  Location: at the focus

  Orientation: upright

  Size: smaller

  Type: virtual
• What happen when an object place at the center of the curvature?



  Location: center of the curviture Orientation: inverted Size: same Type: real
• What happen when an object is place at the focus?


  Location: infinity Size: larger