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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 adiverging mirror.
The focal length f is the distance from the vertex to the principal focus. Since theprincipal focus is midway between C and V, the focal length is one-half the radius of
curvature; f=1
2R
2. A ray parallel to the principal or optical axis is reflected through theprincipal focus in converging mirrors, or appears to come fromthe principal focus in diverging mirrors.
4. A ray striking the vertex of the mirror is reflected at an equalangle on the opposite side of the principal axis .
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
A. Concave Mirror
Where must you place an object ifyou want to form an image that isupright and bigger than the object?
Where must you place an object ifyou want to form a smaller image?
Where can you place an object so thatno image forms?
Between which two points does animage form is virtual?
B. Convex Mirror
What kind of image is always formedon convex mirrors?