Reflection of Light Flashcards
Bouncing back of light into the same medium it has been traveling after striking a surface.
Reflection
Incident rays and reflected rays make equal angles with a line perpendicular to the surface
Normal
Two types of angle
Angle between the incident ray and normal
Angle of incidence
Two types of angle
Angle between the reflected ray and normal
Angle of reflection
The angle of incidence and the angle of reflection are equal
ANGLE OF INCIDENCE = ANGLE OF REFLECTION
Law of reflection
Two types of Reflection
Smooth surfaced
Regular reflection
Two types of Reflection
Rough surfaced
Diffuse reflection
Surface that is smooth enough to produce a regular reflection of light incident upon it
Mirror
Two types of Mirrors :
Flat surface
Plane Mirrors
Two types of Mirrors :
Reflecting surface take
Spherical Mirrors
Two types of Spherical Mirrors :
Curves inward
) opposite C
Concave mirror
Two types of Spherical Mirrors :
Curves outward
( normal C
Convex mirror
Images
- Formed by actual intersection of reflected rays
- Formed in front of a mirror
- Always upside down
Real image
Images
- Formed behind the mirror
- Upright
- No actual intersection of reflected rays
Virtual image
- Always virtual
- Upright
- Same as the object
- Located on the same distance behind the mirror
- Laterally reversed
Plane Mirror Images
Left of the object becomes right of the image and vice versa
Laterally reversed
Parts of Spherical Mirrors :
Imaginary lines passes through the geometric center of the mirror.
Principal Axis
Parts of Spherical Mirrors :
Point located at the center of the sphere
Center of Curvature (C)
Parts of Spherical Mirrors :
- The geometric center of the mirror
- Point where the principal axis passes through the mirror
Vertex (V)
Parts of Spherical Mirrors :
Point between the V and C
Focus/Focal point (F)
Parts of Spherical Mirrors :
- Distance of the C and V
- Also the radius of the sphere
Radius of Curvature (R)
Parts of Spherical Mirrors :
- The distance between F and V.
- Equal to half of R since it is in between the V and the C
Aperture
Focal Length (f)
Parts of Spherical Mirrors :
Width of the mirror
Aperture
Parts of Spherical Mirrors :
- Determine the type of location of an image formed by spherical mirror
- 3 special rays are convenient to draw in locating the image formed by a spherical mirror
- The intersection of any two rays will give us the position of the image
Ray Diagramming
