06 Reflection FAQ

• refer video examples 
• General problem-solving approach to light ray diagrams: I M O E
• locate/draw the 4 items: Image, Mirror (or reflecting surface), Object (or light source) and Eye (or Observer)
• consider 1 point on the object each time to draw one light ray from this point to the mirror, reflected to the eye.
• if a cone of light is required usually (with a large eye), draw 2 rays from 1 point on the object and finally reaching each edge of the large eye.
• Minimum height of mirror problem 
• use IMOE approach to show the light rays and the section of the mirror required (minimum height). 
• draw a triangle using Eye (or observer), Mirror and Image. Similar triangles would allow you to determine the ratio of mirror required to height/length of object, hence actual minimum height of mirror needed. The ratio may not be half, depending on the relative location of the Eye and the mirror.
• special case of a person standing in front of a mirror where she herself is the object
• minimum height of mirror needed = 1/2 her height
• independent of distance from her to the mirror
• presentation of a 302 group experiment: Reflection Experiment^^.pdf

• Post your questions, comments, ideas etc. below using Add a comment.
• Use Reply to continue a tread of ideas or discussion.  
• Remember you are all Reflective, Responsive and Responsible learners.