MODULE QUIZ 3 Flashcards
(21 cards)
the bouncing off of light rays from an object.
Reflection of Light
imaginary line perpendicular to the surface.
Normal line
is the angle which an incident ray makes with normal line
The angle of incidence (𝜃i)
is the angle which the reflected ray makes with the normal.
The angle of reflection (𝜃r)
states that the incident and reflected rays lie in the same plane with the normal and that the angle of reflection equals the angle of incidence, 𝜃i = 𝜃r.
The Law of Reflection
Kinds of Reflection
SPECULAR, DIFFUSE
happens when light is reflected at only one path. This is true when light hits a smooth surface.
Specular Reflection
happens when light is reflected into multiple directions. This is true when light hits a rough surface.
Diffuse Reflection
Types of Images
Virtual images, Real images
Are images formed by diverging light rays that cannot be projected on a screen, Its orientation is erect, and laterally inverted from left to right
Virtual Images
Formed when the outgoing rays from one point at a real location. Inverted Image
Real Images
Is a flat mirror that reflects light rays as they approach the surface of the mirror
Plane Mirror
SPHERICAL MIRRORS
CONCAVE, CONVEX
Converging Mirror
Reflecting surface is inward
Real Image
CONCAVE
Diverging Mirror
Reflecting surface is outward
Virtual
CONVEX
An imaginary line passing through the center of the sphere at the exact center of the mirror.
Principal Axis
The point on the mirror’s surface where the principal axis meets the mirror.
Vertex
The point in the center of the sphere from which the mirror was sliced.
Curvature (C)
Halfway between the center of curvature and vertex
Focal point (F)
The distance between the vertex and the focal point
Focal length (f)
Images formed by a Plane Mirror:
Object is the same size as the image size
The distance the object is equal to the image distance from the mirror. (Do=Di)
It is always erect
It is found behind the mirror
The image is laterally reversed, left to right
