# Unit 14 Packet

Regular Physics
To optimize your use of this resource, click on the links for individual questions in your unit packet. The link will bring you to online help related to that question. Carefully read the resource material and procede to answer the questions in your unit packet. Answers and complete solutions to the Supplementary Challenges section can also be reviewed.

Objective 1

What? Change Direction and Speed? Lab

Refraction of Light

Objective 2

Least Time Principle Lab

Snell's Law

Index of Refraction Lab

Index of Refraction

Objective 4

Total Internal Reflection

Critical Angles

Objective 5

Lenses

Objective 6

Ray Diagrams - Converging Lenses

Ray Diagrams - Diverging Lenses

Objective 8

Optical Instruments

### What? Change Direction and Speed? Lab (pp. 1-2)

The Broken Pencil

The Marching Soldiers

The Tractor-Light Analogy

### Refraction of Light (pp. 3-4)

#1 Definition of Refraction

#2 Angles of Incidence and Refraction

#3 Boundary Behavior

#4 The Secret of the Archer Fish

#5 Optical Density and Speed

#6 - #8 Direction of Bending

### Least Time Principle Lab (pp. 5-6)

Wave Speed and Refraction

Wave Speed and Direction of Bending

Mathematical Relationships for Refraction

### Snell's Law (pp. 7-8)

#1 Snell's Law

Ray Tracing and Problem-Solving

#2 Direction of Bending

#3 Direction of Bending

#4 Direction of Bending and the Angle of Refraction

#5 Determination of n Values

### Index of Refraction Lab (pp. 9-12)

Measuring Angles of Incidence and Refraction

Snell's Law

Determination of n Values

### Index of Refraction (pp. 13-14)

#1 Determination of n Values

#2 Determination of n Values

#3 Ray Tracing and Problem-Solving

#4 Ray Tracing and Problem-Solving

### Total Internal Reflection (pp. 15-16)

#1 - #4 Refraction and the Direction of Bending

#5 - #7 Varying Intensities of the Refracted and Reflected Rays

#8 - #9 Conditions for Total Internal Reflection

#10 - #11 Critical Angle Definition

#12 Conditions for Total Internal Reflection

#13 Critical Angle Calculation

### Critical Angle (pp. 17-18)

#1 Direction of Bending and the Angle of Refraction

#2 Derivation of Critical Angle Equation

#3 Critical Angle Calculation

#4 Critical Angle Definition and Total Internal Reflection

#6 - #7 Critical Angle Calculation

#9 The Sparkle of Diamonds

#10 The Secret of the Archer Fish

Critical Angle and Total Internal Reflection

The Law of Reflection

### Lenses (pp. 19-20)

#1 and #2 Converging vs. Diverging Lens

#3 amd #4 Refraction by Lenses

### Ray Diagrams - Converging Lenses (pp. 21-22)

Ray Diagrams for Converging Lenses

### Ray Diagrams - Diverging Lenses (pp. 23)

Ray Diagrams for Diverging Lenses

### Optical Instruments (pp. 25-26)

#1 The Anatomy of the Eye

#2 Ciliary Muscles

#3 Hyperopia and Myopia

#4 and #5 Myopia - Nature of Problem and its Correction

#6 and #7 Hyperopia - Nature of Problem and its Correction

#8 Astigmatism

#9 Binoculars vs. Telescopes

#10 and #11 Ray Diagram for Microscope

### Supplementary Challenges

See answers and accompanying solutions to all odd-numbered problems.

Additional resources for physics students are available through links on the GBS Physics Home Page. Such resources include the Multimedia Physics Studios , a collection of animations and movies which illustrate key physics concepts and the Shockwave Physics Studios, a collection of interactive Shockwave exercises.

This page created by Tom Henderson of Glenbrook South High School.

Comments and suggestions can be sent by e-mail to Tom Henderson.

This page last updated on 8/24/98.