reflection (By Jain)

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PUNEET KUMAR JAIN:

PUNEET KUMAR JAIN FROM : JAIN COMPUTERS 85-A, PKT A1, LIG FLATS, GURDWARA ROAD, MAYUR VIHAR, PHASE-3, DELHI-96 Time given for Needy Children Slide 1

Reflection of Light:

Reflection of Light REFLECTION OF LIGHT

Definitions:

Definitions Luminous objects – generate their own light (the sun) Illuminated objects – reflect light (the moon) Line of Sight – a line from an object or image to your eyes (light from the object travels along this line to your eyes) Slide 3

Rays of Light:

Rays of Light Incident Ray – leaves the object and strikes the mirror Reflected Ray – leaves mirror and strikes your eye The reflected ray is on the line of sight from the image to your eye. Slide 4

Law of Reflection:

Law of Reflection Angle of incidence equals angle of reflection. Slide 5

Law of Reflection:

Law of Reflection Normal – line perpendicular to the mirror surface Angle of incidence – angle between incident ray and normal Angle of reflection – angle between reflected ray and normal Slide 6

Law of Reflection Animation:

Law of Reflection Animation q i = q r Slide 7

Diffuse Reflection:

Diffuse Reflection Slide 8

Diffuse Reflection:

Diffuse Reflection Slide 9

Wet Road Glare:

Wet Road Glare Driving at night on a wet roadway results in an annoying glare from oncoming headlights. Slide 10

Image Formed By Plane Mirror:

Image Formed By Plane Mirror Image is virtual. Image is located as far behind the mirror as the object is in front of the mirror. Slide 11

Distance from Mirror Irrelevant:

Distance from Mirror Irrelevant Slide 12

Right Angle Mirror:

Right Angle Mirror Slide 13

Right Angle Mirror:

Right Angle Mirror Formation of primary and secondary images Slide 14

Kaleidoscope:

Kaleidoscope Angles smaller than 90 o produce more than 3 images Slide 15

Law of Reflection Curved Mirrors:

Law of Reflection Curved Mirrors Angle of Incidence is equal to the angle of reflection

Converging Mirror:

Converging Mirror A series of flat mirrors can be arranged to reflect parallel light through a single point. Increasing the number of flat mirrors causes the shape to more closely approximate a parabola and causes the reflected light to converge in a smaller area.

Concave Mirror Terms:

Concave Mirror Terms Axis Center of Curvature Radius of Curvature Focus Focal Length

Three Useful Rays:

Three Useful Rays Ray parallel to the axis reflects through the focus. Ray through the focus reflects parallel to the axis. Ray through the center of curvature reflects back on itself.

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