Flat Mirrors Simplest mirror Objects image appears behind the
mirror Objects distance from the mirror is represented as p Image
distance (the distance the object appears behind the mirrors
surface) is represented a q
Slide 3
The image formed in the mirror is called a virtual image
(upright) The image of the object and the object are the same size
p = - q
Slide 4
Curved Mirrors The amount by which the mirror is curved
determines how large the image will be. The mirror is part of a
spherical shell.
Slide 5
The radius of the curvature of the mirror is known as R R is
the distance from the mirrors surface to the center of the
curvature, C. Principle axis the line that extends infinitely from
the center of the mirrors surface through the center of the
curvature, C
Slide 6
Slide 7
Focal point (F) an image point between the center of the
curvature and the center of the mirrors surface f = focal length
distance between the focal point and the mirrors surface.
Slide 8
Image location can be predicted with the mirror equation.
Slide 9
Slide 10
Magnification (M) the ratio of the height of the image to the
objects actual height. M > 1image is larger than object M =
1image and object are same size M < 1image is smaller than
object
Slide 11
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Slide 14
Convex Mirrors Diverging mirror Used in side view mirrors,
roadway mirrors and in stores
Slide 15
q is always negative f is always negative The object is always
virtual image (upright) larger than the image
Slide 16
An upright pencil is placed in front of a convex spherical
mirror with a focal length of 8.00 cm. An image 2.50 cm tall is
formed 4.44 cm behind the mirror. Find the position of the object,
the magnification of the image, and the height of the pencil.
Slide 17
An upright pencil is placed in front of a convex spherical
mirror with a focal length of 8.00 cm. An image 2.50 cm tall if
formed 4.44 cm behind the mirror. Find the position of the object,
the magnification of the image, and the height of the pencil.