Snell s Law n i sin! i = n r sin! r

Transcription

1 Mr. Rawson Physics Snell s Law n i sin! i = n r sin! r Angle o Reraction n glass = 1.5 Angle o Incidence n air = o 32 o 1

2

3 Mr. Rawson Physics 4

4 Mr. Rawson Physics 2

5 Mr. Rawson Physics 3

6 !"#$%&&&& '''''''''''''''''''''''''& ()%&&& '''''''''''''''''''''''''& *"+$%&&& '''''''''''''''''''''''''&&&,-".$&/0&123$42$&& Converging Lenses

7 Converging Lenses

8 Converging Lenses

9 Converging Lenses 1. Any ray that travels parallel to the principal axis reracts through the ocal point 2. Any ray that travels through the ocal point reracts parallel to the principal axis Any ray that travels through the center continues straight.

10 !"#$%&&&& '''''''''''''''''''''''''& ()%&&& '''''''''''''''''''''''''& *"+$%&&& '''''''''''''''''''''''''&&&,-".$&/0&123$42$&& Diverging Lenses

11 Diverging Lenses

12 Diverging Lenses

13 Diverging Lenses 1. Any ray that travels parallel to the principal axis reracts upward, and is extended back to the ocal point 2. Any ray that travels toward the opposite ocal point reracts parallel to the principal axis, and is extended back parallel 3. Any ray that travels through the center continues straight.

14 Name: Date: Section C D F Reraction II: Ray Diagrams, Converging Lens Real Images Mr. Alex Rawson Physics 1. For the ollowing images, please draw the ray diagrams. 2. The ollowing slides illustrate an image being reracted by a converging lens. The only element that changes is the object distance, and rom that the image distance changes, as well as the image height and magniication. Certain elements are the same, such as ocal length and height o the object. 3. Remember the 3 rules o lenses: i. Any ray that travels parallel to the principal axis reracts through the ocal point. ii. Any ray that travels through the ocal point reracts parallel to the principal axis. iii. Any ray that travels through the center continues straight. 4. Rays must converge to create an image point. 5. Please consult the textbook pages to ensure that your diagrams are correct. 6. Please use the Links page on The Vault or supplemental applets, diagrams, and explanations. Object Distance greater than Converging Lenses 1

15 Object Distance at Converging Lenses Object Distance less than Converging Lenses 2

16 Object Distance at 2 2 Converging Lenses Object Distance at Converging Lenses 3

17 Name: Date: Section C D F Reraction III: Ray Diagrams Virtual and 2D Images Mr. Alex Rawson Physics 1. For the ollowing images, please draw the ray diagrams. 2. The ollowing slides illustrate an image/object being reracted by a lens. The only element that changes is the object distance, and rom that the image distance changes, as well as the image height and magniication. Certain elements are the same, such as ocal length and height o the object. 3. Remember the 3 rules o lenses: i. Any ray that travels parallel to the principal axis reracts through the ocal point. ii. Any ray that travels through the ocal point reracts parallel to the principal axis. iii. Any ray that travels through the center continues straight. 4. Rays must converge to create an image point. 5. Please consult the textbook pages to ensure that your diagrams are correct. 6. Please use the Links page on The Vault or supplemental applets, diagrams, and explanations. Object Distance less than 2 2 Converging Lenses 1

18 Object Distance greater than Diverging Lenses Object Distance at 2 2 Diverging Lenses 2

19 2D Object on Principal Axis 2 2 Diverging Lenses 2D Object o Principal Axis 2 2 Converging Lenses 3

20 Name: Date: Section C D F Reraction IV: Lens Calculations Mr. Alex Rawson Physics 1. Determine image distance, image height, and magniication or a 5-cm tall object placed 45.0 cm rom a converging lens having a ocal length o 15.0 cm. Please draw a diagram Determine p, h, and M or a 5-cm tall object placed 10.0 cm rom a converging lens having a ocal length o 15.0 cm. Draw a diagram. 2 2

21 3. A magniied, inverted image is located a distance o 32.0 cm rom a converging lens with a ocal length o 12.0 cm. Determine the object distance and tell whether the image is real or virtual. Ater calculations, please ill in the diagram I a diverging lens has a ocal length o cm, ind the image distance when an object is placed 32.7 cm rom the lens's surace. Draw a diagram. 2 2

22 5. A person looks at a gem with a jeweler's microscope - a converging lens with a ocal length o 12.7 cm. The microscope orms a virtual image 31.6 cm rom the lens. Determine the object distance, and magniication o the image. Ater calculations, please ill in the diagram. 2 2

23 Air n = 1.00 Glass n = 1.5 Critical Angle! c n i sin! i = n r sin! r! i Ray! i! r Red 0 Green 15 Orange 30 Brown 40 Purple 45 Blue 50

24 Name: Date: ANSWER KEY Section C D F Reraction II: Ray Diagrams, Converging Lens Real Images Mr. Alex Rawson Physics 1. For the ollowing images, please draw the ray diagrams. 2. The ollowing slides illustrate an image being reracted by a converging lens. The only element that changes is the object distance, and rom that the image distance changes, as well as the image height and magniication. Certain elements are the same, such as ocal length and height o the object. 3. Remember the 3 rules o lenses: i. Any ray that travels parallel to the principal axis reracts through the ocal point. ii. Any ray that travels through the ocal point reracts parallel to the principal axis. iii. Any ray that travels through the center continues straight. 4. Rays must converge to create an image point. 5. Please consult the textbook pages to ensure that your diagrams are correct. 6. Please use the Links page on The Vault or supplemental applets, diagrams, and explanations. Object Distance greater than Converging Lenses 1

25 Object Distance at 2F 2 2 Converging Lenses Object Distance less than Converging Lenses 2

26 Object Distance at 2 2 Converging Lenses Object o Principal Axis 2 2 Converging Lenses 3

27 Name: Date: Section C D F Reraction III: Ray Diagrams Virtual and 2D Images Mr. Alex Rawson Physics 1. For the ollowing images, please draw the ray diagrams. 2. The ollowing slides illustrate an image/object being reracted by a lens. The only element that changes is the object distance, and rom that the image distance changes, as well as the image height and magniication. Certain elements are the same, such as ocal length and height o the object. 3. Remember the 3 rules o lenses: i. Any ray that travels parallel to the principal axis reracts through the ocal point. ii. Any ray that travels through the ocal point reracts parallel to the principal axis. iii. Any ray that travels through the center continues straight. 4. Rays must converge to create an image point. 5. Please consult the textbook pages to ensure that your diagrams are correct. 6. Please use the Links page on The Vault or supplemental applets, diagrams, and explanations. Object Distance less than 2 2 Concave Mirrors 1

28 Object Distance greater than 2F 2 2 Diverging Lenses Object Distance at F 2 2 Diverging Lenses 2

29 2D Object on Principal Axis 2 2 Diverging Lenses 2D Object O Principal Axis 2 2 Converging Lenses 3

30 Name: Date: Section C D F Reraction IV: Lens Calculations Mr. Alex Rawson Physics 1. Determine image distance, image height, and magniication or a 5-cm tall object placed 45.0 cm rom a converging lens having a ocal length o 15.0 cm. Please draw a diagram Determine q, h, and M or a 5-cm tall object placed 10.0 cm rom a converging lens having a ocal length o 15.0 cm. Draw a diagram. 2 2

31 3. A magniied, inverted image is located a distance o 32.0 cm rom a converging lens with a ocal length o 12.0 cm. Determine the object distance and tell whether the image is real or virtual. Ater calculations, please ill in the diagram I a diverging lens has a ocal length o cm, ind the image distance when an object is placed 32.7 cm rom the lens's surace. Draw a diagram. 2 2

32 5. A person looks at a 5 cm tall crystal with a jeweler's microscope - a converging lens with a ocal length o 12.7 cm. The microscope orms a virtual image 31.6 cm rom the lens. Determine the object distance, and magniication o the image. Ater calculations, please ill in the diagram. 2 2