1. What is Reflection of Light?
Reflection of Light occurs when a ray of light approaches a surface and bounces
back
2. The Law of Reflection
Important Terms:
Normal Line is the line perpendicular to the surface at the point of
incidence.
Incident Ray is the incoming ray of light that strikes the surface.
incident ray: the ray that strikes the surface
Reflected Ray is the ray that bounces off the surface after striking it.
Reflected ray: the ray that bounces off the surface.
Angle of Incidence: The angle between the incident ray and the normal
line.
Angle of Reflection: The angle between the reflected ray and the normal
line.
Law Of Reflection
1. The angle of reflection is equal to the angle of incidence.
2. The incident ray, the reflected ray and the normal lie in the same plane.
3. The incident ray and the reflected ray are on the opposite sides of the normal.
3. Types of Reflection
There are two main types of reflection:
1. Regular/ Specular Reflection
Regular (specular) reflection occurs when light rays bounce off a smooth
surface, such as a mirror, and remain parallel to each other, producing a clear
image.
2. Diffused Reflection
happens when light rays strike a rough surface, scattering in different
directions and preventing the formation of a clear image.
4. Types of Mirrors
1. Plane Mirror
A flat mirror
2. Curved Mirrors
Concave Mirror: Curves inward like the inside of a bowl
Convex Mirror: Curves outward
5. Characteristics of Images formed by Mirrors
a. Plane Mirror:
Image Size: Same size
Image Orientation: Erect
6. Where Do We Use These Mirrors?
Plane Mirrors
the mirrors we use at home
in our bathrooms
Convex Mirrors
security mirrors in stores
rear-view mirrors in cars
Concave Mirrors
Used in telescopes
headlights
