SNC2D1: Optics

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Lesson 1: Introduction to Optics Lesson 2: Reflection of Light in a Plane Mirror Lesson 3: Curved Mirrors, Ray Diagrams and Image Properties Lesson 4: Applications of Curved Mirrors and Curved Mirror Equation Calculations. Lesson 6: Introduction to refraction and refraction ray diagrams. Lesson 7: Total internal reflection and Critical angle Lesson 10: Lenses and Ray Diagrams Lesson 11: Lens Equation Lesson 12: Introduction to the human eye and eye conditions/corrections

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Physics

10th

74 Terms

1

Lesson 1: Introduction to Optics Lesson 2: Reflection of Light in a Plane Mirror Lesson 3: Curved Mirrors, Ray Diagrams and Image Properties Lesson 4: Applications of Curved Mirrors and Curved Mirror Equation Calculations. Lesson 6: Introduction to refraction and refraction ray diagrams. Lesson 7: Total internal reflection and Critical angle Lesson 10: Lenses and Ray Diagrams Lesson 11: Lens Equation Lesson 12: Introduction to the human eye and eye conditions/corrections

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2

Define "converging"

Going towards the one point.

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3

Define "diverging"

Separating, leaving one point into many different directions.

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4

Define "reflection"

The process of light 'bouncing off' an object.

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5

Recall "The Law of Reflection"

θᵢ = θᵣ

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6

Define "The Law of Reflection"

The angle of incidence is equal to the angle of reflection. Measured at the normal.

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7

Define "The Incident Ray"

The ray moving towards the mirror.

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8

Define "The Reflected Ray"

The ray moving away from the mirror that was reflected.

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9

Define "The Point of Incidence"

The point were the light is reflected.

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10

Define "The Normal Line"

The line perpendicular to the mirror where the Point of Incidence is.

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11

Define "Angle of Incidence"

Represented as 'i', the angle between the ray of incidence and the normal.

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12

Define "Angle of Reflection"

Represented as "r", the angle between the ray of reflection and the normal.

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13

Recall "SALT"

Size, Attitude, Location, Type.

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14

Define "Size"

Bigger, smaller, or same size relative to object.

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15

Define "Attitude"

Upright or Inverted relative to object.

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16

Define "Location"

Same Side (Where—F, C 2F', between O + F'), Behind Mirror

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17

Define "Type"

Real or Virtual.

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18

Define "Real Image"

An image that is formed by rays of light and can be seen/projected onto a surface.

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19

Define "Virtual Image"

An image that is formed by 'fake' rays of light and cannot be seen/projected onto a surface.

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20

Define "Converging Mirrors"

Cause parallel light rays rays to come to a point.

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21

"Converging Mirrors" A.K.A.

Concave mirrors

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22

"Concave Mirrors" A.K.A.

Converging Mirrors

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23

Define "Diverging Mirrors"

Cause parallel lights to spread apart from a point

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24

"Diverging Mirrors" A.K.A.

Convex Mirrors

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25

"Convex Mirrors" A.K.A.

Diverging Mirrors

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26

Recall "Centre of Curvature"

C

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27

Define "Centre of Curvature"

Twice the distance of F, the centre of the sphere of the mirror.

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28

Recall "Centre of Curvature" Variable

C

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29

Recall "Vertex" Variable

V

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30

Define "Vertex"

The point at which the mirror intersects the Principle Axis.

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31

Recall "Principal Axis"

PA

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32

Define "Principle Axis"

The line drawn through the vertex, perpendicular to the mirror.

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33

Define "Focus"

The point halfway between the Centre of Curvature and the Vertex

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34

Recall "Focus" Variable

F

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35

List "Types of Mirror"

Concave, Convex.

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36

List "Rules for Concave Mirror Ray Diagram"

Parallel to PA & reflected through F, Through F & reflected parallel to PA, Through C & reflected along same path

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37

List "Rules for Convex Mirror Ray Diagram"

Parallel to PA & reflected backwards with virtual line through F, Towards virtual F & reflected parallel to PA with parallel virtual line parallel to PA, Towards virtual C & reflected on same path with virtual line to C.

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38

Curved Mirror Equation

knowt flashcard image
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39

Recall "Negative F Mirror"

Diverging/Convex Mirror

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40

Recall "Positive F Mirror"

Converging/Concave Mirror

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41

Recall "Negative dᵢ"

Image is virtual

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42

Recall "Positive dᵢ"

Image is real

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43

Recall "Negative M"

Image is inverted

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44

Recall "Positive M"

Image is upright

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45

Recall "Index of Refraction" Variable

n

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46

Define "Index of Refraction" Variable

The ratio of the speed of light in a vacuum to the speed of light in the medium

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47

Recall "Speed of Light in Medium" Variable

V

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48

Recall "Speed of Light in Vacuum" Variable

c

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49

Recall "The Speed of Light"

3.00 • 10^8 m/s

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50

Result of "Light Travelling from less dense to more dense medium"

Bends towards normal

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51

Result of "Light travelling from more dense to less dense medium"

Bends away from normal.

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52

Define "Total Internal Reflection"

Where light reflects in a medium instead of exiting out of it.

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53

Define "Critical Angle"

The greatest angle light is able to exit a medium with.

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54

Recall "Two conditions for total internal reflection"

The angle of incidence must be greater than the critical angle. The light must be travelling from a more to less dense medium.

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55

Define "Convex Lenses"

Lenses that cause parallel light rays to go towards one point.

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56

Define "Concave Lenses"

Lenses that cause parallel light rays to disperse from one point.

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57

"Convex Lenses" A.K.A.

Converging Lenses

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58

"Concave Lenses" A.K.A.

Diverging Lenses

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59

"Converging Lenses" A.K.A.

Convex Lenses

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60

"Diverging Lenses" A.K.A.

Concave Lenses

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61

List "Rules for Lens Ray Diagrams"

A ray parallel to the Primary Focus and is refracted so it passes through F. A ray that passes through F' and is refracted as a parallel line. A ray that passes through the optical centre without bending.

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62

Define "Hyperopia"

The condition where someone can see far away but not close. Caused because the focal point is too far away to the retina.

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63

"Hyperopia" A.K.A.

Farsightedness

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64

Define "Myopia"

The condition where someone can see close but not far away. The focal point is too close to the retina.

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65

"Myopia" A.K.A.

Nearsightedness

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66

Define "Lens for Hyperopia"

Convex/Converging Lens

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67

Define "Lens for Myopia"

Concave/Diverging Lens.

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68

Define "Incandescence"

The light produced by hot objects. Most energy is given off as heat.

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69

Define "Luminescence"

Light given off by objects that have not been heated.

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70

Define "Fluorescent"

Tubes that contain mercury vapour that emit UV light until it is coated in phosphos. Some energy is given off as heat.

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71

Define "Phosphorescence"

Light emitted by phosphor that glow in the dark.

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72

Define "Discharge Tubes"

Neon Lights, produced by an electric current when their energy is released

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73

Define "Light Emitting Diodes"

LED. Very durable, small electric current required.

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74

Define "Chemiluminescence"

Light released during chemical reactions. When it occurs in organisms it is called Bioluminescence.

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