This document discusses reflection and mirrors. It defines reflection as light rays bouncing off a surface, and defines mirrors as objects that reflect light, usually made of glass coated with metal. It describes two main types of mirrors: plane mirrors with flat surfaces and spherical/curved mirrors. The document discusses image formation using plane mirrors, noting that the height, width, and distance of the object are equal to those of the image. It defines real images as formed by actual light rays that can be projected, and virtual images as formed by extended reflected rays that cannot be projected. The magnification formula and law of reflection are also summarized.

1. REFLECTION

2. REFLECTION
It is the bouncing off of light
rays when it hits a surface
like a plane mirror.

3. MIRROR
It is an object or device that
reflects light. Mirrors are typically
made of glass coated with metal
amalgam (alloy) that reflects a clear
image.

4. TYPES OF MIRRORS:
PLANE – has flat surface
CURVED/ SPHERICAL- has a
surface that is a section of a
shape of a sphere

5. ACT. 1: MIRROR, MIRROR ON THE WALL…
OBJECTIVES:
 Determine the height, width, and the distance from
the mirror of the image formed by plane mirrors.
Compare the actual height, width and the distance
from the mirror of the object with that of the image
formed by plane mirror.

6. Image in a plane mirror
The height of the object is ______________ to the height
of the image.
The distance of the object to the mirror _____________
to the image distance.
The image appears as if it is located behind the mirror
but it is not.
The image is virtual.
is equal
is equal

7. TYPES OF IMAGES:
REAL
- formed by actual rays of light (when rays actually
converge), it can be projected on a screen. It forms in from of
the mirror
VIRTUAL
- formed by the extension of reflected rays (due to the
rays that only appear to converge, it cannot be projected on a
screen

8. MAGNIFICATION FORMULA
Magnification
M = h’ = -q
h p
h’= height of the object
h = height of the image
-q = distance of the image
p = distance of the object

9. LAW OF REFLECTION
Incident ray = the ray of light that hits the mirror
Reflected ray = the ray of light that bounces off of the
mirror
Normal line = An imaginary line that can be drawn
perpendicular to the surface of the mirror at point of
incidence where the ray strikes the mirror.

11. The angle of
incidence if equal to
the angle of
reflection.
The incident ray, the
reflected ray and
normal line lie on the
same plane.
LAW OF REFLECTION