5. -Is the bouncing of light after it hits a
surface

7. “Mirrors don’t lie”

9. Mirrors
a reflective surface, now
typically of glass coated with a
metal amalgam, that reflects
a clear image.

11. LAW OF RELECTION
-states that with respect to the
NORMAL LINE, the ANGLE OF INCIDENCE
and the ANGLE OF REFLECTION of a
reflected light are EQUAL.

14. Mirrors are categorized into:
•Plane
•Curve

15. Plane mirrors
A plane mirror is a mirror with a
flat (planar) reflective surface.

18. Curved mirror
A curved mirror is a mirror with a curved reflecting
surface. The surface may be either:
-CONVEX (bulging outward)
-CONCAVE (bulging inward)
Most curved mirrors have surfaces that are shaped like
part of a sphere, but other shapes are sometimes used
in optical devices.

19. CONCAVE MIRROR
• Concave mirrors are used:
- in reflecting telescopes.
-provide a magnified image of
the face for applying make-up or
shaving. In illumination applications,
in torches, headlamps and spotlights,
-used to form optical cavities,
which are important in laser
construction
-landing aid system of
modern aircraft carriers also uses a
concave mirror.

22. CONVEX MIRROR

26. CHARACTERISTICS OF AN IMAGE
•Size of an image
-same
-reduced
-magnified

27. CHARACTERISTICS OF AN IMAGE
•Orientation of an image
-upright
-inverted

28. CHARACTERISTICS OF AN IMAGE
•Types of image
-real image
-virtual image

32. Ray diagram
- Is used for determining the
characteristics of an image formed in
mirror or through lens…

33. RAY DIAGRAM
•Is a tool used tool used to
determine the location,
orientation, an size of an
image formed in a mirror or
through a lens.

34. TERM SYMBOL DESCRIPTION
Vertex V The center of the
mirror
Center of
curvature
C The center of the
spherical
Radius of
curvature
R The distance from the
center
Spherical
diameter
D The diameter of the
spherical mirror

35. TERM SYMBOL DESCRIPTION
Focal Point F This is a point where all rays
converge or seem to converge. It
is also called focus.
Focal length f The distance between the focal
point and the vertex. Can be
obtained by dividing the radius of
curvature by 2.
Principal axis A line passing through the
center of curvature and the
vertex of the mirror
Normal A line perpendicular to the
surface of a mirror

36. TYPES OF RAYS
•Parallel rays
•Radial rays
•Focal rays

37. Parallel ray
-travels in a path that is
parallel to the principal
axis. It is reflected through
the focal point.

38. Radial ray
-travels in a path that is
going to the center of
curvature. It is reflected back
along the incident path.

39. Focal ray
-travels in a path that is
passing through the focal
point. It is reflected in a path
that is parallel to the
principal axis.