Presentation on theme: "The smooth surface of the lake reflects light rays so that the observer sees an ________ of the landscape. image."— Presentation transcript:
1 The smooth surface of the lake reflects light rays so that the observer sees an ________ of the landscape.image
2 MirrorsWhat is the law of reflection?What type of image is produced by each of the three types of mirrors?
3 MirrorsmirrorsOptics includes the study of how __________ and _____________ form images.Light behaves in a predictable manner. When a ray of light approaches and reflects off a flat mirror, then the behavior of light as it reflects would follow the law of reflection. This law states that the angle of _________________ is equal to the angle of _________________.lensesreflectionincidence
4 Light is made up of rays that travel in ____________ lines. MirrorsLight is made up of rays that travel in ____________ lines.A ____________ ______________ shows how the rays change direction when they strike mirrors and pass through lenses.straightraydiagram
5 The Law of ReflectionThe angle of incidence is the angle formed from the ray of light ______________ the mirror.The angle of reflection is the angle formed as the ray of light ______________ the mirror.approachingleavesIncident rayAngle of incidenceAngle of reflectionReflected ray
6 There are three types of mirrors: ___________________ Mirrors are made of a sheet of ____________ that is coated with a thin layer of shiny ___________ on one surface.plane mirrorsconcave mirrorsconvex mirrorsglassmetal
7 Plane MirrorsA mirror with a _________ ___________is a plane mirror. When you look into a plane mirror, you see your ___________ reflection—a right-left reversed image of yourself.To produce your image in a mirror, rays of light strike you and _____________. The reflected rays strike the mirror and are reflected to your ___________. The rays appear to come from ____________ the mirror.flatsurfacereversedreflecteyesbehind
8 Plane Mirrors A plane mirror produces a _____________ _____________ positioned behind the mirror. Although the rays of light seem to come from __________ the mirror, light from the source only exists in front of the mirror. The image in a plane mirror is not ______________ and appears to be as far behind the mirror as the object is in front of the mirror.virtualimagebehindmagnified
9 Concave and Convex Mirrors Concave MirrorsWhen the _________surface of a curved mirror is the reflecting surface, the mirror is a concave mirror.inside
10 Concave and Convex Mirrors The curvature of the reflecting surface causes the reflected rays to come _______________.The point at which the light rays meet is called the _______________ _____________.togetherfocalpointFocal pointConcave mirror
11 Concave and Convex Mirrors The type of image formed depends upon where the object is in relation to a concave mirror:_____________________real imagevirtual image
12 Concave and Convex Mirrors When the object is farther from the mirror than the focal point, the reflected rays meet in front of the mirror to form a _________ ___________.realimageThe image appears _____________upside downFocal pointConcave mirror
13 Concave and Convex Mirrors When the object is closer to the mirror than the focal point is, the reflected rays spread out and appear to come from behind the mirror to form a __________ ____________.virtualimageFocal pointConcave mirrorImage is _________________upright & magnified
14 Concave and Convex Mirrors Concave mirrors are used in automobile headlights and flashlights to direct the illumination from a light bulb into a _________.beam
15 Concave and Convex Mirrors Convex Mirrors When the _________ surface of a curved mirror is the reflecting surface, the mirror is a convex mirror.The curvature of the convex mirror causes the reflected rays to __________ ________.outsidespreadoutFocal pointConvex mirror
16 Concave and Convex Mirrors The image formed by a convex mirror is always __________ and _________than the object.Convex mirrors can only form ___________ images.uprightsmallervirtualFocal pointConvex mirror
17 Concave and Convex Mirrors Convex mirrors are often used in store aisles, at hazardous traffic intersections, and for ________ mirrors on vehicles because of their wide angle of _________.sideview
18 The image in a plane mirror appears to be Assessment QuestionsThe image in a plane mirror appears to bein front of the mirror.behind the mirror.in the plane of the mirror.perpendicular to the plane of the mirror.
19 A real image formed by a mirror is Assessment QuestionsA real image formed by a mirror isalways right-side up.always smaller than the object.always upside down.only formed by convex mirrors.
20 An image of an object, formed by a convex mirror, is always Assessment QuestionsAn image of an object, formed by a convex mirror, is alwaysupright and smaller than the object.upside down and smaller than the object.upright and larger than the object.upside down and larger than the object.
21 Assessment Questions4. According to the law of reflection, the angle of reflection is equal to the angle of incidence True False