Understand geometric relationships associated with the images formed up objects placed in front of plane mirrors.
Anna Litical is doing the Plane Mirror Lab in physics class. She places a pin a distance of 4.5 cm from a plane mirror. How far behind the mirror can the image be expected to appear?
Image Distance
cm
Baldwin Young stands 72 cm from his dresser mirror, inspecting his scalp. How far is the image of his scalp located from his scalp?
Object-to-Image Distance
An object is positioned a distance of 5.8 m from a plane mirror. Determine the …
… distance the image is located from the plane mirror.
m
… distance the image is located from the object.
If an object is located a distance of 4.1 m from a plane mirror, then the image will be located a distance of _____ m from the object.
A meter stick (object) is placed in an upright position in front of a vertically-aligned plane mirror as shown. Like the meter stick, the mirror is equiped with cm-markings. The image of the meter stick is equidistant from the mirror. Suppose that the meter stick is equipped with a working eyeball capable of viewing the top and the bottom of its image. The eyeball is located at the 84-cm mark on the meter stick. Using some geometry, determine …
the location (from 0 cm to 100 cm) of the intersection of the eye's line of sight with the mirror as the eyeball sights at the top of the image.
Sighting Loc'n (top)
… the location (from 0 cm to 100 cm) of the intersection of the eye's line of sight with the mirror as the eyeball sights at the bottom of the image.
Sighting Loc'n (bottom)
… the amount of mirror (in cm) required by the meter stick to view the image.
Am't of Mirror Needed