Ch7: Adaboost for building robust classifiers KH Wong Ch7. Adaboost, V5b 1.
ch7 light
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ch7Student: ___________________________________________________________________________ 1. A fluorescent light source emits light as a result of high temperature. True False
2. The radiation from the Sun is most intense near the yellow-green wavelength. True False
3. The change in the direction of light as it passes through the boundary between two media is called refraction. True False
4. The angle of incidence is equal to the angle of refraction. True False
5. The slower light travels in a given media, the greater the index of refraction. True False
6. Longer wavelengths are affected more by a prism or water droplets than are the shorter wavelengths. True False
7. The sky appears blue due to the light reflected from the oceans. True False
8. Glare is light that tends to be polarized predominantly in the horizontal plane. True False
9. Ultraviolet light carries more energy than infrared radiation. True False
10. Interference is a property of light most easily explained by the particle model. True False
11. Which of the following objects does not emit light? A. a candle flame B. the Sun C. the Moon D. a burning coal
12. When an electric stove element is hot enough, it gives off a dull red glow. When it cools to the point that it no longer glows, it will A. emit shorter wavelength radiation. B. emit the same wavelength as before, but with less energy. C. emit longer wavelength radiation. D. stop emitting radiation altogether.
13. You are able to see non-luminous objects because light has undergone A. diffuse reflection. B. refraction. C. constructive interference. D. a change in speed.
14. The frequency of radiation is A. directly proportional to its wavelength. B. inversely proportional to the velocity. C. independent of the temperature of the source. D. None of the above.
15. Phenomena such as diffraction and interference can be most easily explained in terms of the A. ray model of light. B. particle model of light. C. wave model of light. D. photoelectric effect.
Consider the diagram below,
16. If 1 is the incident ray, what is the angle of reflection? A. A B. B C. C D. D
17. What is the refracted ray indicated by? A. 1 B. 2 C. 3 D. 4
18. If angle A is 60, what does angle C measure? A. 60 B. 90 C. 30 D. roughly 25
19. What are the units of h in the equation E = hf? A. B. C. Js D. Wm
20. The colors of the visible spectrum can be measured in units of A. wavelength. B. frequency. C. energy. D. All of the above.
21. We explain light today A. mostly with particle models. B. mostly as a wave phenomenon. C. as having both wave and particle behavior. D. as something completely unknown.
22. Max Planck discovered that the blackbody radiation emitted by vibrating molecules A. was continuous, like a train of waves. B. was constant for all objects. C. varied greatly from one experiment to the next. D. appeared to come in multiples of certain fixed amounts.
23. The photoelectric effect could not be adequately explained with a wave model of light because A. the energy of the electrons ejected from a metal varied directly with the intensity. B. the number of electrons ejected from a metal depended upon the intensity. C. the number of electrons ejected from a metal depended upon the wavelength. D. the energy of the ejected electrons did not depend upon the intensity.
24. The Sun appears reddish as it sets because A. the Sun emits more radiation at longer wavelengths at sunset. B. more of the shorter, bluer wavelengths are scattered by the dust and haze. C. the Doppler shift lowers the frequency as a given spot on Earth rotates away from the Sun. D. more of the longer, redder wavelengths are scattered by the atmosphere.
25. The image formed by a plane mirror is A. virtual. B. real. C. a result of diffuse reflection. D. smaller than the object.
26. Farsightedness, or hyperopia, can be corrected with what type lens? A. convex B. concave C. reflecting D. None of the above.
27. Nearsightedness, or myopia, can be corrected with what type lens? A. convex B. concave C. reflecting D. None of the above.
28. A mirage is caused by hot air near the ground A. refracting light rays upward. B. reflecting light rays upward. C. refracting light rays downward. D. reflecting light rays downward.
29. A rainbow always appears A. in the part of the sky in the same direction as the Sun. B. in the part of the sky opposite from the Sun. C. at an angle of 50 to 54 degrees from the Sun. D. only at sunset.
30. Polarizing sunglasses are useful because they are able to A. use the critical angle to block light. B. reflect glare. C. absorb reflected light, which is polarized. D. refract reflected light, which causes glare.
31. The index of refraction for flint glass is 1.5. This means that A. light travels faster in this medium than it does in vacuum. B. the wavelength of light passing through glass is 1.5 as long as it is in vacuum. C. the speed of light is slower in this medium than it is in vacuum. D. a ray of light is refracted away from the normal as it passes from air into glass.
32. Total internal reflection A. occurs when light strikes an interface at greater than the critical angle. B. accounts for the brilliance of cut diamonds. C. allows light to travel in a curved path inside an optic fiber. D. All of these are true.
33. When monochromatic light from two slits arrive at a point on a screen out of phase, A. a dark region is produced. B. a bright region is produced. C. two different colors of light are observed. D. a region of polarized light is produced.
34. A prism separates the colors of sunlight into a spectrum because A. red light is refracted the most, while violet light is refracted the least. B. longer wavelengths are bent more than shorter wavelengths. C. each wavelength of light has its own index of refraction. D. it polarizes the different wavelengths of light.
35. Polarized light vibrates A. only in one plane. B. in two planes at right angles to one another. C. in all planes. D. not at all.
ch7 Key
1. A fluorescent light source emits light as a result of high temperature. FALSE
Blooms Level: 2. Understand Section: 7.01 Tillery - Chapter 07 #1 Topic: Light
2. The radiation from the Sun is most intense near the yellow-green wavelength. TRUE
Blooms Level: 3. Apply Section: 7.01 Tillery - Chapter 07 #2 Topic: Light
3. The change in the direction of light as it passes through the boundary between two media is called refraction. TRUE
Blooms Level: 3. Apply Section: 7.02 Tillery - Chapter 07 #3 Topic: Light
4. The angle of incidence is equal to the angle of refraction. FALSE
Blooms Level: 2. Understand Section: 7.02 Tillery - Chapter 07 #4 Topic: Light
5. The slower light travels in a given media, the greater the index of refraction. TRUE
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #5 Topic: Light
6. Longer wavelengths are affected more by a prism or water droplets than are the shorter wavelengths. FALSE
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #6 Topic: Light
7. The sky appears blue due to the light reflected from the oceans. FALSE
Blooms Level: 3. Apply Section: 7.02 Tillery - Chapter 07 #7 Topic: Light
8. Glare is light that tends to be polarized predominantly in the horizontal plane. TRUE
Blooms Level: 3. Apply Section: 7.03 Tillery - Chapter 07 #8 Topic: Light
9. Ultraviolet light carries more energy than infrared radiation. TRUE
Blooms Level: 2. Understand Section: 7.04 Tillery - Chapter 07 #9 Topic: Light
10. Interference is a property of light most easily explained by the particle model. FALSE
Blooms Level: 3. Apply Section: 7.03 Tillery - Chapter 07 #10 Topic: Light
11. Which of the following objects does not emit light? A. a candle flame B. the Sun C. the Moon D. a burning coal
Blooms Level: 4. Analyze Section: 7.01 Tillery - Chapter 07 #11 Topic: Light
12. When an electric stove element is hot enough, it gives off a dull red glow. When it cools to the point that it no longer glows, it will A. emit shorter wavelength radiation. B. emit the same wavelength as before, but with less energy. C. emit longer wavelength radiation. D. stop emitting radiation altogether.
Blooms Level: 3. Apply Section: 7.01 Tillery - Chapter 07 #12 Topic: Light
13. You are able to see non-luminous objects because light has undergone A. diffuse reflection. B. refraction. C. constructive interference. D. a change in speed.
Blooms Level: 4. Analyze Section: 7.01 Tillery - Chapter 07 #13 Topic: Light
14. The frequency of radiation is A. directly proportional to its wavelength. B. inversely proportional to the velocity. C. independent of the temperature of the source. D. None of the above.
Blooms Level: 3. Apply Section: 7.02 Tillery - Chapter 07 #14 Topic: Light
15. Phenomena such as diffraction and interference can be most easily explained in terms of the A. ray model of light. B. particle model of light. C. wave model of light. D. photoelectric effect.
Blooms Level: 3. Apply Section: 7.03 Tillery - Chapter 07 #15 Topic: Light
Consider the diagram below,
Tillery - Chapter 07
16. If 1 is the incident ray, what is the angle of reflection? A. A B. B C. C D. D
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #16 Topic: Light
17. What is the refracted ray indicated by? A. 1 B. 2 C. 3 D. 4
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #17 Topic: Light
18. If angle A is 60, what does angle C measure? A. 60 B. 90 C. 30 D. roughly 25
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #18 Topic: Light
19. What are the units of h in the equation E = hf? A. B. C. Js D. Wm
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #19 Topic: Light
20. The colors of the visible spectrum can be measured in units of A. wavelength. B. frequency. C. energy. D. All of the above.
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #20 Topic: Light
21. We explain light today A. mostly with particle models. B. mostly as a wave phenomenon. C. as having both wave and particle behavior. D. as something completely unknown.
Blooms Level: 4. Analyze Section: 7.05 Tillery - Chapter 07 #21 Topic: Light
22. Max Planck discovered that the blackbody radiation emitted by vibrating molecules A. was continuous, like a train of waves. B. was constant for all objects. C. varied greatly from one experiment to the next. D. appeared to come in multiples of certain fixed amounts.
Blooms Level: 4. Analyze Section: 7.04 Tillery - Chapter 07 #22 Topic: Light
23. The photoelectric effect could not be adequately explained with a wave model of light because A. the energy of the electrons ejected from a metal varied directly with the intensity. B. the number of electrons ejected from a metal depended upon the intensity. C. the number of electrons ejected from a metal depended upon the wavelength. D. the energy of the ejected electrons did not depend upon the intensity.
Blooms Level: 4. Analyze Section: 7.04 Tillery - Chapter 07 #23 Topic: Light
24. The Sun appears reddish as it sets because A. the Sun emits more radiation at longer wavelengths at sunset. B. more of the shorter, bluer wavelengths are scattered by the dust and haze. C. the Doppler shift lowers the frequency as a given spot on Earth rotates away from the Sun. D. more of the longer, redder wavelengths are scattered by the atmosphere.
Blooms Level: 4. Analyze Section: 7.03 Tillery - Chapter 07 #24 Topic: Light
25. The image formed by a plane mirror is A. virtual. B. real. C. a result of diffuse reflection. D. smaller than the object.
Blooms Level: 3. Apply Section: 7.02 Tillery - Chapter 07 #25 Topic: Light
26. Farsightedness, or hyperopia, can be corrected with what type lens? A. convex B. concave C. reflecting D. None of the above.
Blooms Level: 3. Apply Section: 7.02 Tillery - Chapter 07 #26 Topic: Light
27. Nearsightedness, or myopia, can be corrected with what type lens? A. convex B. concave C. reflecting D. None of the above.
Blooms Level: 3. Apply Section: 7.02 Tillery - Chapter 07 #27 Topic: Light
28. A mirage is caused by hot air near the ground A. refracting light rays upward. B. reflecting light rays upward. C. refracting light rays downward. D. reflecting light rays downward.
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #28 Topic: Light
29. A rainbow always appears A. in the part of the sky in the same direction as the Sun. B. in the part of the sky opposite from the Sun. C. at an angle of 50 to 54 degrees from the Sun. D. only at sunset.
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #29 Topic: Light
30. Polarizing sunglasses are useful because they are able to A. use the critical angle to block light. B. reflect glare. C. absorb reflected light, which is polarized. D. refract reflected light, which causes glare.
Blooms Level: 3. Apply Section: 7.03 Tillery - Chapter 07 #30 Topic: Light
31. The index of refraction for flint glass is 1.5. This means that A. light travels faster in this medium than it does in vacuum. B. the wavelength of light passing through glass is 1.5 as long as it is in vacuum. C. the speed of light is slower in this medium than it is in vacuum. D. a ray of light is refracted away from the normal as it passes from air into glass.
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #31 Topic: Light
32. Total internal reflection A. occurs when light strikes an interface at greater than the critical angle. B. accounts for the brilliance of cut diamonds. C. allows light to travel in a curved path inside an optic fiber. D. All of these are true.
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #32 Topic: Light
33. When monochromatic light from two slits arrive at a point on a screen out of phase, A. a dark region is produced. B. a bright region is produced. C. two different colors of light are observed. D. a region of polarized light is produced.
Blooms Level: 2. Understand Section: 7.02 Tillery - Chapter 07 #33 Topic: Light
34. A prism separates the colors of sunlight into a spectrum because A. red light is refracted the most, while violet light is refracted the least. B. longer wavelengths are bent more than shorter wavelengths. C. each wavelength of light has its own index of refraction. D. it polarizes the different wavelengths of light.
Blooms Level: 4. Analyze Section: 7.02 Tillery - Chapter 07 #34 Topic: Light
35. Polarized light vibrates A. only in one plane. B. in two planes at right angles to one another. C. in all planes. D. not at all.
Blooms Level: 2. Understand Section: 7.03 Tillery - Chapter 07 #35 Topic: Light
ch7 SummaryCategory Blooms Level: 2. Understa nd Blooms Level: 3. Apply Blooms Level: 4. Analyze Section: 7.01 Section: 7.02 Section: 7.03 Section: 7.04 Section: 7.05 Tillery - Chapter 07 Topic: Light # of Questio ns 5 12 18 5 20 6 3 1 36 35