This topic was rather tough at first, as I did not understand the reason for it, and how to constrcut the diagrams. However, after the first week of lessons, I managed to understand, and was more interested in this topic. To learn this topic, we went through lessons and experiments. The experiments really benefitted us as we got to understand reflection and refraction through activities, which really allowed us to understand better.
Reflection
-All surfaces reflect light
-Definitions
Normal:An imaginary line perpendicular to surface
Incident ray:Ray sriking surface of plane
Reflected ray:Ray reflected of surface of plane
-Rules of reflection
1st rule: The incident ray, normal and reflected ray all lies on the same plane
2nd rule:Angle of incidence=Angle of reflection
-Characteristics of a image formed on a plane mirror
Upright,Virtual,Same size as object, laterally inverted, same distance as object
A virtual image is one that cannot be formed on a screen as actual light rays does not meet at the image point. Instead, the light rays diverge to form the vitual image.
A real image is one that can form on a screen as actual light rays meet at image point.
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