REFLECTION AND MIRRORS Flashcards
bouncing back of light
Reflection
Line that separates incident ray and reflected ray
Normal
It divides 2 ray into 2 angles
Normal
Ray 1 is also known as
Incident ray
Ray 2 is also known as
Reflected ray
Initial ray that will touch the object
Incident ray
ray that bounces back
Reflected ray
Angle 1 is also known as
Angle of incidence
Angle 2 is also known as
Angle of reflection
Angle between the incident ray and normal
Angle of incidence
Angle between normal and reflected ray
Angle of reflection
Total degrees of angle
180⁰
imaginary line between incident and reflected ray
Normal
2 types of reflection
Regular/specular and diffuse
reflection that has a smooth surface
Regular/specular reflection
reflection that has an irregular pattern and rough surface
Diffuse reflection
2 main ideas of law of reflection
- Incident, normal and reflective ray will all be in a single surface.
- Angle of incidence should be equal to angle of reflection.
Mirror that will reflect an actual image
Plane mirror
flat mirror
Plane mirror
2 types of image
Real image and virtual image
Are real images inverted or always upside down?
Yes
Are virtual images upright?
Yes
This image can be found in screens
Virtual image
2 types of spherical mirror
concave convex
curvature is going inwards
concave
curvature is going outwards
convex
also known as converging mirror
concave
also known as diverging mirror
convex
reflected rays will intersect at the principal focus
concave
reflected rays will go away from one another
convex
straight line that connects the center, focus, vertex
optical axis or principal axis
center of the sphere from where the mirror was
taken
center of curvature
center of curvature is denoted by
(C)
The center of the mirror. It sometimes the pole of the mirror.
vertex
vertex is denoted by
(V)
is the radius of the sphere.
radius of curvature
radius of curvature is denoted by
(R)
refers to the width of the mirror
aperture
aperture is denoted by
(AB)
is the point where the reflected rays meet for converging mirror
principal focus
principal focus is denoted by
(F)
the point where the reflected rays seem to come from behind a diverging mirror.
principal focus
is the distance from the pole to the principal focus
focal length
focal length is denoted by:
(f)
The focal
length is ______ of the radius of curvature
one half
True or false
The image formed by a convex mirror is never real because the reflected rays spread
out from the mirror.
True
True or false
Images formed by a convex mirror are always virtual, upright, and
smaller than the object.
True
True or false
A concave mirror can produce a real or virtual images
True
method to describe the size of an object
ray diagramming
used to determine the apparent location of an image formed by a plane mirror
ray diagram
point of intersection of 2 incident rays
location of object
point of intersection of 2 reflected rays
location of image
Complete the sentence:
If the ray passes through the center of curvature;
It is reflected along itself (both incident and reflected)
If the incident is parallel to the optical axis;
the reflected ray will pass through the focus
If the incident ray passes through the principal focus;
the reflected ray will be parallel to the optical axis
