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Physics > Ray Model of Light (slide 4) > Flashcards

Ray Model of Light (slide 4) Flashcards

1
Q

Ray Model of Light

A

angle of incidence
normal
angle of reflection

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2
Q

Luminous objects produce and radiate light

A

in all
directions

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3
Q

Light ray

A straight line (with an arrow) on a diagram representing the

A

direction and path that light is travelling

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4
Q

When light hits an object, it may be:

Transmitted

A

– flow of energy through an object

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5
Q

Absorbed –

A

– interception of energy (converted to different energy) -clothing/plants

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6
Q

Reflected –

A

– light changing directions by bouncing off an object (mirror)

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7
Q

Refracted –

A

light changing directions by bending through an object

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8
Q

Opacity of Objects

A

ability to transmit light

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9
Q

Transparent Object

A

allows all or most light to pass through

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10
Q

Translucent Object

A

some light passes through the object (reflected or absorbed)

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11
Q

Opaque Object

A

No light passes through (all the light is absorbed or reflected)

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12
Q

Mirror

A

Any polished surface reflecting an image

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13
Q

Reflection

A

The bouncing back of light from any surface

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14
Q

Plane Mirror

A

Flat mirror

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15
Q

Incident ray

A

Ray of light that travels from the source towards the surface of an object

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16
Q

Normal

A

The perpendicular line to a surface; where a ray of light meets the surface

17
Q

Reflected ray

A

Ray of light that travels away from the surface of an object

18
Q

Angle of incidence/reflection

A

The angle between the incident/reflected ray and the normal in a ray diagram

19
Q

There are two laws of reflection

A

The angle of incidence equals the angle of reflection

The incident ray, the reflected ray, and the normal all lie in the same plane (same side of the mirror)

20
Q

specular reflection

A

light reflects off of smooth surface

21
Q

diffuse reflection

A

reflection off of a dull or irregular surface

Physics (12 decks)

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