FORCES AND MOTION
LIGHTCHAPTER 55.1 Understanding Reflection of LightLearning
Outcomes: In the end of the class, student should be able to:
describe characteristics of image formed by reflection of light
state the laws of reflection of light draw a ray diagrams to show
the positioning and characteristics of image formed by - plane
mirror- convex mirror- concave mirror
IMAGES FORMED BY A PLANE MIRROR
IMAGES FORMED BY A PLANE MIRRORImage formed by a plane mirror
are caused by reflection of light from the mirror surface.
An image formed by a plane mirror is:
laterally inverted same size as the object virtual object
distance = image distance
Why is the word AMBULANCE written this way at the front of the
ambulance?
The word AMBULANCE is written inversed laterally to enable
vehicle drivers in front to read it in their rearview mirror.What
is the distance of the image formed by plane mirror?
2mobjectimageTHE LAWS OF REFLECTION
THE LAWS OF REFLECTION The incident ray, the reflected ray and
the normal line all lie in the same plane.
The angle of incident, i, is equal to the angle of reflection,
r. i = rRAY DIAGRAM
Draw a ray diagram to produce an image form for concave mirror-
u < f- u = f- f < u < 2f- u = 2f- u > 2f- object at
infinityDraw a ray diagram to produce an image form for convex
mirror- u < f- u > f
