reflections in curved mirrors
DESCRIPTION
Reflections in Curved Mirrors. 7SCIENCE. Curved mirrors. Not all mirrors are flat, some may be circular in shape and curved Curved mirrors exist for different purposes Concave Convex Light rays travel in parallel (straight) lines and strike the mirror and are reflected . - PowerPoint PPT PresentationTRANSCRIPT
Reflections in Curved Mirrors
7SCIENCE
Curved mirrors
• Not all mirrors are flat, some may be circular in shape and curved
• Curved mirrors exist for different purposes– Concave – Convex
• Light rays travel in parallel (straight) lines and strike the mirror and are reflected
Concave mirrors• Light rays reflect and meet at one point • Reflected through a point called the focal point• The distance between the focal point to the
center of the mirror is called a focal length
Concave mirror
• Concave = forms a ‘cave’ like inside of a spoon
• The image formed depends on the distance of the object from the focal point of the mirror– If the object is between the
focal point and the mirror, the image appears inverted (upside down) and smaller
– If the object is past the focal point, the image appears upright and larger
Convex mirror• Curves outward ex. outside of a spoon• Causes light rays to spread apart• Image is always upright and smaller than the
object• Ex. Security mirrors, car/truck mirrors– “things are larger and closer than they seem”