Quizbank/College Physics/II T4study

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1 Quizbank/College Physics/II T4study From Wikiversity TrigPhysT4_151021_Study If you are reading this as a Wikiversity page, proper pagebreaks should result if printed using your browser's print option. On Chrome, Explorer, and Firefox, this option is available in the upper right hand corner of your screen. But, pagebreaks do not render properly if you use "Printable version" on Wikiversity's Print/export option on the left hand sidebar. This document contains either a study guide OR pairs of exams taken from the same exam bank If two exams have the same s number, then v1 and v2 have the same questions, presented in different (random) order. Exams with different s numbers have different questions and may not have the same difficulty. Click items in the table of contents and appropriate page should be reached. This feature should allow you to print only those pages that you need. At the end of this document Attribution for the quizzes identifies where the questions were obtained Study guide links reading materials and/or relevant equations. 1/26

2 TrigPhysT4_151021_Study v1s1 1. Which lens has the shorter focal length? a) b) c) They have the same focal lengh. 2. If this represents the eye looking at an object, where is this object? a) at infinity b) One focal length in front of the eye c) Two (of the other answers) are true d) very far away e) directly in front of the eye (almost touching) 3. After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet. a) true b) false 2/26

3 4. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus? a) b) c) 5. Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates a) how a nearsighted person might see a distant object b) how a farsighted person might see an object that is too close for comfort c) how a farsighted person might see a distant object d) how a nearsighted person might see an object that is too close for comfort 6. Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates a) how a farsighted person might see a distant object b) how a nearsighted person might see an object that is too close for comfort c) how a nearsighted person might see a distant object d) how a farsighted person might see an object that is too close for comfort 3/26

4 7. In optics, normal means a) perpendicular to the surface b) to the right of the optical axis c) parallel to the surface d) to the left of the optical axis 8. The law of reflection applies to a) telescopes but not microscopes b) only light in a vacuum c) curved surfaces d) flat surfaces e) both flat and curved surfaces 9. When light passes from air to glass a) it bends away from the normal b) the frequency decreases c) it does not bend d) the frequency increases e) it bends towards the normal 4/26

5 10. When light passes from glass to air a) it bends towards the normal b) the frequency decreases c) it does not bend d) the frequency increases e) it bends away from the normal 11. An important principle that allows fiber optics to work is a) total internal reflection b) partial internal absorption c) the invariance of the speed of light d) total external refraction e) the Doppler shift 12. The focal point is where a) rays meet whenever they pass through a lens b) rays meet whenever they are forming an image c) the center of the lens d) rays meet if they were parallel to the optical axis before striking a lens e) rays meet if they are parallel to each other 5/26

6 13. An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens? a) 1.17 x 10 0 cm b) 2.07 x 10 0 cm c) 3.69 x 10 0 cm d) 6.56 x 10 0 cm e) 1.17 x 10 1 cm 14. An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens? a) 4.18 x 10 0 cm b) 7.43 x 10 0 cm c) 1.32 x 10 1 cm d) 2.35 x 10 1 cm e) 4.18 x 10 1 cm 15. An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image? a) 2.65 x 10 1 cm b) 3.18 x 10 1 cm c) 3.82 x 10 1 cm d) 4.58 x 10 1 cm e) 5.49 x 10 1 cm 6/26

7 16. An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm. How far is the final image from the converging lens? a) 5.64 x 10 0 cm b) 1.78 x 10 1 cm c) 5.64 x 10 1 cm d) 1.78 x 10 2 cm e) 5.64 x 10 2 cm 17. If the electron behaved as a classical (non quantum) particle and NOT somehow connected to a spring inside the metal, then one would expect that photoelectrons would be emitted a) at a specific frequency b) above a threshold intensity c) above a threshold wavelength d) above a threshold frequency 18. If the electron behaved as a classical (non quantum) particle and the electron was somehow connected to a spring inside the metal, then one would expect that photoelectrons would be emitted a) at a specific frequency b) above a threshold intensity c) above a thresholdfrequency d) above a threshold wavelength 7/26

8 19. In the photoelectric effect, how was the maximum kinetic energy measured? a) by measuring the voltage required to prevent the electrons from passing between the two electrodes. b) by measuring the wavelength of the light c) by measuring the distance between the electrodes 20. Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime? a) low speed b) low mass c) high speed d) confinement to a small space 21. How does the Bohr atom differ from Newton's theory of planetary orbits? a) The force between proton and electron is not attractive for the atom, but it is for planets and the sun. b) electrons make elliptical orbits while planets make circular orbits c) planets make elliptical orbits while the electron makes circular orbits d) The force between planets and the sun is not attractive for the atom, but it is for proton and electron. 8/26

9 22. What are the units of Plank's constant? a) energy x time b) mass x velocity x distance c) none of the above d) momentum x distance e) all of the above 23. What are the units of Plank's constant? a) all of the above b) momentum x distance x mass c) none of the above d) mass x velocity e) energy x time 24. How would you describe Old Quantum Theory a) complete but not self consistent b) neither complete nor self consistent c) complete and self consistent d) self consistent but not complete 25. The first paper that introduced quantum mechanics was the study of a) protons b) energy c) light d) electrons 9/26

10 26. What are examples of energy? a) b) all of the above c) heat d) mgh where m is mass, g is gravity, and h is height 27. What are examples of energy? a) all of the above b) c) heat d) momentum 28. What was Plank's understanding of the significance of his work on blackbody radiation? a) he knew it would someday win him a Nobel prize b) he eventually convinced his dissertation committee that the theory was correct c) the thought it was some sort of mathematical trick d) he was afraid to publish it for fear of losing his reputation 10/26

11 29. What was "spooky" about Taylor's 1909 experiment with wave interference? a) The light was so dim that the photoelectric effect couldn't occur b) The light was so dim that only one photon at a time was near the slits. c) The light was dim, but it didn't matter because he was blind. d) The interference pattern mysteriously disappeared. 30. Approximately how often does a supernovae occur in a typical galaxy? a) once every 50 years b) once every 5 years c) once a 5 months 31. If a star were rushing towards Earth at a high speed a) there would be a blue shift in the spectral lines b) there would be a red shift in the spectral lines c) there would be no shift in the spectral lines 32. An example of a standard candle is a) a supernova in a distant galaxy b) all of these are standard candles c) any part of the nighttime sky that is dark d) any part of the nighttime sky that is giving off light 11/26

12 33. If a galaxy that is 10 Mpc away is receding at 700km/s, how far would a galaxy be receding if it were 20 Mpc away? a) 350km/s b) 1400km/s c) 700km/s 34. The "apparent" magnitude of a star is a) How bright it would be if it were not receding due to Hubble expansion b) How bright it would be if you were exactly one light year away c) How bright it is as viewed from Earth 35. In the essay "Why the sky is dark at night", a graph of velocity versus distance is shown. What is odd about those galaxies in the Virgo cluster (circled in the graph)? a) they are not receding away from us b) they have a wide variety of speeds c) the cluster is close to us d) they all have nearly the same speed 36. Why was it important to observe supernovae in galaxies that are close to us? a) they have less of a red shift, and interstellar gas absorbs red light b) because supernovea are impossible to see in distant galaxies c) we have other ways of knowing the distances to the nearby galaxies; this gives us the opportunity to study supernovae of known distance and ascertain their absolute magnitude. d) it is easier to measure the doppler shift, and that is not always easy to measure. 12/26

13 37. What if clouds of dust blocked the light from distant stars? Could that allow for an infinite and static universe? a) No, there are clouds, but they remain too cold to resolve the paradox b) No, the clouds would get hot c) No, if there were clouds, we wouldn't see the distant galaxies d) Yes, that is an actively pursued hypothesis 13/26

14 Key to TrigPhysT4_151021_Study v1s1 1. Which lens has the shorter focal length? a) + b) c) They have the same focal lengh. 2. If this represents the eye looking at an object, where is this object? a) at infinity b) One focal length in front of the eye + c) Two (of the other answers) are true d) very far away e) directly in front of the eye (almost touching) 3. After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet. a) true + b) false 14/26

15 4. Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus? a) + b) c) 5. Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates + a) how a nearsighted person might see a distant object b) how a farsighted person might see an object that is too close for comfort c) how a farsighted person might see a distant object d) how a nearsighted person might see an object that is too close for comfort 6. Shown is a corrective lens by a person who needs glasses. This ray diagram illustrates a) how a farsighted person might see a distant object b) how a nearsighted person might see an object that is too close for comfort c) how a nearsighted person might see a distant object + d) how a farsighted person might see an object that is too close for comfort 15/26

16 7. In optics, normal means + a) perpendicular to the surface b) to the right of the optical axis c) parallel to the surface d) to the left of the optical axis 8. The law of reflection applies to a) telescopes but not microscopes b) only light in a vacuum c) curved surfaces d) flat surfaces + e) both flat and curved surfaces 9. When light passes from air to glass a) it bends away from the normal b) the frequency decreases c) it does not bend d) the frequency increases + e) it bends towards the normal 16/26

17 10. When light passes from glass to air a) it bends towards the normal b) the frequency decreases c) it does not bend d) the frequency increases + e) it bends away from the normal 11. An important principle that allows fiber optics to work is + a) total internal reflection b) partial internal absorption c) the invariance of the speed of light d) total external refraction e) the Doppler shift 12. The focal point is where a) rays meet whenever they pass through a lens b) rays meet whenever they are forming an image c) the center of the lens + d) rays meet if they were parallel to the optical axis before striking a lens e) rays meet if they are parallel to each other 17/26

18 13. An object is placed 6.3 cm to the left of a diverging lens with a focal length of 8.9 cm. How far is the image from the lens? a) 1.17 x 10 0 cm b) 2.07 x 10 0 cm +c) 3.69 x 10 0 cm d) 6.56 x 10 0 cm e) 1.17 x 10 1 cm 14. An object is placed 3.55 cm to the left of a converging lens with a focal length of 6.8 cm. How far is the image from the lens? a) 4.18 x 10 0 cm +b) 7.43 x 10 0 cm c) 1.32 x 10 1 cm d) 2.35 x 10 1 cm e) 4.18 x 10 1 cm 15. An object of height 0.67 cm is placed 107 cm behind a diverging lens with a focal length of 70 cm. What is the height of the image? +a) 2.65 x 10 1 cm b) 3.18 x 10 1 cm c) 3.82 x 10 1 cm d) 4.58 x 10 1 cm e) 5.49 x 10 1 cm 18/26

19 16. An object is placed 12.1 cm to the left of a diverging lens with a focal length of 16.9 cm. On the side, at a distance of 6.7 cm from the diverging lens is a converging lens with focal length equal to 4 cm. How far is the final image from the converging lens? +a) 5.64 x 10 0 cm b) 1.78 x 10 1 cm c) 5.64 x 10 1 cm d) 1.78 x 10 2 cm e) 5.64 x 10 2 cm 17. If the electron behaved as a classical (non quantum) particle and NOT somehow connected to a spring inside the metal, then one would expect that photoelectrons would be emitted a) at a specific frequency + b) above a threshold intensity c) above a threshold wavelength d) above a threshold frequency 18. If the electron behaved as a classical (non quantum) particle and the electron was somehow connected to a spring inside the metal, then one would expect that photoelectrons would be emitted + a) at a specific frequency b) above a threshold intensity c) above a thresholdfrequency d) above a threshold wavelength 19/26

20 19. In the photoelectric effect, how was the maximum kinetic energy measured? + a) by measuring the voltage required to prevent the electrons from passing between the two electrodes. b) by measuring the wavelength of the light c) by measuring the distance between the electrodes 20. Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime? a) low speed b) low mass + c) high speed d) confinement to a small space 21. How does the Bohr atom differ from Newton's theory of planetary orbits? a) The force between proton and electron is not attractive for the atom, but it is for planets and the sun. b) electrons make elliptical orbits while planets make circular orbits + c) planets make elliptical orbits while the electron makes circular orbits d) The force between planets and the sun is not attractive for the atom, but it is for proton and electron. 20/26

21 22. What are the units of Plank's constant? a) energy x time b) mass x velocity x distance c) none of the above d) momentum x distance + e) all of the above 23. What are the units of Plank's constant? + a) all of the above b) momentum x distance x mass c) none of the above d) mass x velocity e) energy x time 24. How would you describe Old Quantum Theory a) complete but not self consistent + b) neither complete nor self consistent c) complete and self consistent d) self consistent but not complete 25. The first paper that introduced quantum mechanics was the study of a) protons b) energy + c) light d) electrons 21/26

22 26. What are examples of energy? a) + b) all of the above c) heat d) mgh where m is mass, g is gravity, and h is height 27. What are examples of energy? + a) all of the above b) c) heat d) momentum 28. What was Plank's understanding of the significance of his work on blackbody radiation? a) he knew it would someday win him a Nobel prize b) he eventually convinced his dissertation committee that the theory was correct + c) the thought it was some sort of mathematical trick d) he was afraid to publish it for fear of losing his reputation 22/26

23 29. What was "spooky" about Taylor's 1909 experiment with wave interference? a) The light was so dim that the photoelectric effect couldn't occur + b) The light was so dim that only one photon at a time was near the slits. c) The light was dim, but it didn't matter because he was blind. d) The interference pattern mysteriously disappeared. 30. Approximately how often does a supernovae occur in a typical galaxy? + a) once every 50 years b) once every 5 years c) once a 5 months 31. If a star were rushing towards Earth at a high speed + a) there would be a blue shift in the spectral lines b) there would be a red shift in the spectral lines c) there would be no shift in the spectral lines 32. An example of a standard candle is + a) a supernova in a distant galaxy b) all of these are standard candles c) any part of the nighttime sky that is dark d) any part of the nighttime sky that is giving off light 23/26

24 33. If a galaxy that is 10 Mpc away is receding at 700km/s, how far would a galaxy be receding if it were 20 Mpc away? a) 350km/s + b) 1400km/s c) 700km/s 34. The "apparent" magnitude of a star is a) How bright it would be if it were not receding due to Hubble expansion b) How bright it would be if you were exactly one light year away + c) How bright it is as viewed from Earth 35. In the essay "Why the sky is dark at night", a graph of velocity versus distance is shown. What is odd about those galaxies in the Virgo cluster (circled in the graph)? a) they are not receding away from us + b) they have a wide variety of speeds c) the cluster is close to us d) they all have nearly the same speed 36. Why was it important to observe supernovae in galaxies that are close to us? a) they have less of a red shift, and interstellar gas absorbs red light b) because supernovea are impossible to see in distant galaxies + c) we have other ways of knowing the distances to the nearby galaxies; this gives us the opportunity to study supernovae of known distance and ascertain their absolute magnitude. d) it is easier to measure the doppler shift, and that is not always easy to measure. 24/26

25 37. What if clouds of dust blocked the light from distant stars? Could that allow for an infinite and static universe? a) No, there are clouds, but they remain too cold to resolve the paradox + b) No, the clouds would get hot c) No, if there were clouds, we wouldn't see the distant galaxies d) Yes, that is an actively pursued hypothesis 25/26

26 Attribution (for quiz questions) under CC by SA license Geometric_Optics/Q:vision&oldid= Geometric_Optics/Q:thinLens&oldid= title=quantum_mechanics/photoelectric_effect/quiz&oldid= title=how_things_work_college_course/quantum_mechanics_timeline/quiz&oldid= title=why_is_the_sky_dark_at_night/quiz&oldid= Study guide title=quantum_mechanics/photoelectric_effect&oldid= title=how_things_work_college_course/quantum_mechanics_timeline&oldid= Retrieved from " title=quizbank/college_physics/ii_t4study&oldid= " This page was last modified on 22 October 2015, at 23:38. Text is available under the Creative Commons Attribution ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. 26/26