This document discusses key terms and concepts related to curved mirrors, including the center of curvature, vertex, radius of curvature, principal axis, aperture, principal focus, and focal length. It also provides four rules for how rays of light interact with curved mirrors: 1) a ray through the center of curvature is reflected back along itself, 2) a parallel ray is reflected through the principal focus, 3) a ray through the focus is reflected parallel to the principal axis, and 4) a ray hitting the vertex is reflected at an equal angle. The problem asks how images are formed in curved mirrors, and provides materials and learning stations to experiment with concave and convex mirrors.

3.  The center of curvature C is the center of the sphere where the mirror was taken.
 The vertex V is the center of the mirror. It is sometimes called the pole of the mirror.
 The radius of curvature R is the radius of the sphere. It is the distance between C and V.
 The principal axis P, or optical axis, is the straight line joining P and V.
 The aperture MN refers to the width of the mirror.
 The principal focus F is the point where the reflected rays seem to come from behind a
diverging mirror.
 The focal length f is the distance from the vertex to the principal focus. Since the
principal focus is midway between C and V, the focal length is one-half the radius of
curvature; f=
1
2
R

5. 1. A ray passing through the center of curvature is reflected along
itself.

6. 2. A ray parallel to the principal or optical axis is reflected through the
principal focus in converging mirrors, or appears to come from
the principal focus in diverging mirrors.

7. 3. A ray passing through the focus is reflected parallel to the
principal or optical axis.

8. 4. A ray striking the vertex of the mirror is reflected at an equal
angle on the opposite side of the principal axis .

9. PROBLEM:
How are images formed in curve mirrors?
MATERIALS:
A. Learning Station 1
 Meter stick
 Object lamp
 Ruler
 Concave mirror
 Meter stick
 Screen
B. Learning Station 2
 Object lamp
 Meter stick
 Ruler
 Convex mirror
 Meter stick
 Screen

10. Learning
Station 1
Learning
Station 2
Group
1
Group
2
Finished

12. A. Concave Mirror
Where must you place an object if
you want to form an image that is
upright and bigger than the object?
Where must you place an object if
you want to form a smaller image?
Where can you place an object so that
no image forms?
 Between which two points does an
image form is virtual?
B. Convex Mirror
What kind of image is always formed
on convex mirrors?

13. Have advance readings on
Refraction of Light and answer
the following questions:
1. How is light refracted?
2. What is the mathematical
equation for the index of
refration?
Refer to Physics: Science and
Technology IV Textbook page