TopicSlidesMinutes 1 Displacement Vectors Kinematics Graphs Energy Power Springs Shadows 39 9 Field of Vision Colors Convex mirrors Refraction Lenses Optical Power 618 Concave Mirrors

The law of reflection, therefore, simply states that when a ray of light is reflected from a surface, it is reflected in such a direction that the incident angle equals the reflected angle. Using the law of reflection, we can determine the location of images formed by plane mirrors. x x o o

Converges light Diverges light Brings it together Spreads it out Converging mirrorDiverging mirror

F Concave mirrors C Back of mirror Principal axis Radius of curvature f Focal length V (vertex) Center of curvature Focal point NOTE The focal length (f) is half the radius of curvature.

Click A ray parallel to the principal axis is reflected through the focal point (F). In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V

Click A ray that goes through the focal point (F) is reflected parallel to the principal axis. In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V

Click A ray that strikes the vertex (V) is reflected like a plane mirror. (Angle of incidence = Angle of reflection) In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V Incident ray Reflected ray Incident ray Reflected ray

Click A ray that goes through C (the center of curvature) is reflected back along its own path. In order to draw images formed by curved mirrors, remember that : F C Principal axis Back of mirror V

F Concave mirrors C Back of mirror Principal axis Object at infinity (very far away) All rays arrive parallel to the principal axis All rays reflect through F No Image formed

F Concave mirrors C Back of mirror Principal axis Object Image d o is positive Object beyond C d i is positive h i is negative M is negative and  1 d o is positive h o d i d o Real

F Concave mirrors C Back of mirror Principal axis Object Image d i is positive h i is negative M is negative and  1 d o is positive h o Object beyond C d o is positive h o Real

F Concave mirrors C Back of mirror Principal axis Object Image d o is positive h o d i h i is negative M is negative and  1 Object beyond C Real

F Concave mirrors C Back of mirror Principal axis Object Image d o is positive h o d i h i is negative M is negative and  1 Object beyond C Real

F Concave mirrors C Back of mirror Principal axis Object Image d i is positive h i is negative M is negative and = 1 d o is positive h o Object at center of curvature Real

F Concave mirrors C Back of mirror Principal axis Object Image d i is positive h i is negative M is negative and  1 d o is positive h o Object between C and F Real

F Concave mirrors C Back of mirror Principal axis Parallel d o is positive h o Object at focal point No Image formed

Concave mirrors FC Back of mirror Principal axis Diverging d o is positive h o Object within focal length

Concave mirrors FC Back of mirror Principal axis Diverging d i d i is negative h i is positive M is positive and  1 Image d o is positive h o h i Object within focal length Virtual

Click The diagram below represents an object placed in front of a concave mirror whose centre of curvature is at point C. Which of the following best represents the image formed by the mirror? A)B) C)D) F Concave Mirrors Slide:

A) Real and upright B) Real and inverted C) Virtual and upright D) Virtual and inverted E) No image is formed Click An object is placed at point P in front of a concave mirror. Which of the following are the characteristics of the image. F Image Draw F which is midway between C and mirror. Concave Mirrors Slide:

Image Click Concave Mirrors Slide:

Click Concave Mirrors Slide:

Normal Click Concave Mirrors Slide:

A real image formed in front of a curved mirror is always: Click A) Smaller than the object B) Larger than the object C) Upright D) Inverted Image Not always! Concave Mirrors Slide: Look!

Image Click Concave Mirrors Slide:

… and good luck!