Course Name: Physics 2 Student: Aryash Chauhan Course ID: SCIH036058 ID: F68560331 Submittal: 59 Progress Test 3 This Progress Test covers the course materials that were assigned in Units 5 and 6. Although the progress test is similar in style to the unit evaluations, the progress test is a closed-book, proctored test. You may not have access to notes or any of the course materials while you are taking the test. It is important that you do your own work. Select the response that best completes the statement or answers the question. You may use your calculator or scratch paper to work out solutions. ____ 1. When a nucleus emits a beta particle, its atomic number a. b. c. ____ 2. A galvanometer that has been calibrated to measure electric potential is called a a. b. c. ____ 3. short wavelength, either dim or bright. long wavelength, either dime or bright. any wavelength, either dim or bright. Reactions that take place in a breeder reactor primarily change ions into different ions. a. b. ____ 7. inorganic material. charcoal. organic materials. The photoelectric effect occurs when the incident light beam is a. b. c. ____ 6. none of it 1/16 1/4 Carbon dating requires that the object being tested contain a. b. c. ____ 5. ammeter. voltmeter. magnetometer. The half-life of a certain isotope is 1 day. At the end of 4 days, how much of the isotope remains? a. b. c. ____ 4. changes, and so does its mass number. changes, but its mass number remains constant. remains constant, but its mass number changes. True False In an electromagnetic wave, the electric and magnetic fields are _________ to each other and _________ to the direction of wave motion. a. b. c. at right angles, perpendicular parallel, at right angles at right angles, parallel ____ 8. The phenomenon of inducing voltage by changing the magnetic field around a conductor is called a. b. c. ____ 9. electromagnetic induction. Faraday’s induction. transformer induction. A photosensitive surface is illuminated with the same amount of blue and violet light. Which light will cause more electrons to be ejected? a. b. c. the blue light the violet light Not enough information is given. ____ 10. The magnetic field strength inside a current-carrying coil will be greater if the coil encloses a(n) a. b. c. vacuum. iron rod. wooden rod. ____ 11. Which of the following are nucleons? a. b. c. protons protons and neutrons protons, neutrons, and electrons ____ 12. If uranium split into three equal fragments instead of two during nuclear fission, the energy released would be a. b. c. about the same. more. less. ____ 13. Which of the following is NOT true of electric and magnetic fields? a. b. c. An electric field is created in any region of space in which a magnetic field is changing with time. A magnetic field is created in any region of space in which an electric field is changing with time. Induction of electric fields by changing magnetic fields occurs only if a conducting material is present. ____ 14. Electricity is a source of energy. a. b. True False ____ 15. The force on an electron moving in a magnetic field will be the largest when its direction a. b. c. is exactly opposite to the magnetic field direction. is perpendicular to the magnetic field direction. is the same as the magnetic field direction. ____ 16. According to de Broglie, all matter can be viewed as having wave properties. a. b. True False ____ 17. How much force is exerted by a magnetic field on a particle moving in a direction parallel to the magnetic field lines? a. b. c. maximum less than maximum zero ____ 18. The energy of a photon is directly proportional to its a. b. c. wavelength. frequency. speed. ____ 19. A certain radioactive isotope placed near a Geiger counter registers 160 counts per second. 32 hours later, the counter registers 10 counts per second. What is the half-life of the isotope? a. b. c. 8 hours 24 hours 32 hours ____ 20. Nuclear fusion occurs typically in a. b. c. the upper atmosphere. uranium mines. the sun. ____ 21. Models are assessed in terms of their “truthfulness.” a. b. True False ____ 22. What is quantum physics? a. b. c. the study of motion at very small (atomic level) distances the study of motion at very high speeds the study of motion near very large masses ____ 23. Which experiences the least electrical force in an electric field? a. b. c. A beta particle An alpha particle A gamma ray ____ 24. When electrons move down from a high energy orbit to a lower energy orbit _______ are emitted. a. b. c. photons protons electrons ____ 25. The atomic number of an atom or ion refers to the number of a. b. c. nucleons. electrons. protons. ____ 26. Gamma rays are the most penetrating type of radiation because they have the largest charge. a. b. True. False. ____ 27. Magnetism is produced by the motion of electrons as they a. b. c. move around the nucleus. spin on their axes. both move around the nucleus and spin on their axes. ____ 28. An electron and a proton are traveling at the same speed. Which has a longer wavelength? a. b. c. Both have the same wavelength. the proton the electron ____ 29. Metal detectors in airports work by a. b. c. sensing a change in the magnetic field. using large amounts of electric current. shooting electron beams through your body. ____ 30. Which type of radioactive decay occurs when the atomic number increases by one? a. b. c. alpha decay beta decay gamma decay ____ 31. What happens when a compass needle is brought close to a current carrying wire? a. b. c. The compass needle does not respond. The compass needle is deflected one way or another depending on the direction of the current. The compass needle is always deflected to the right (right hand rule). ____ 32. X-rays are similar to a. b. c. alpha rays. beta rays. gamma rays. ____ 33. According to your textbook, what determines the chemical properties of an atom? a. b. c. number of protons number of neutrons number of nucleons ____ 34. How does the size of a mercury atom (80 protons) compare to the size of a hydrogen atom (1 proton)? a. b. c. Mercury atoms are about 80 times larger. Mercury atoms are about 80 times smaller. Mercury atoms are slightly larger. ____ 35. Almost all energy sold today is of the AC type because a. b. c. DC energy wastes electricity. AC voltage is easy to step up and step down. AC energy was established first. ____ 36. The photoelectric effect suggests that light interacts with matter as a wave. a. b. true false ____ 37. The force that holds the nucleus together is a. b. c. the gravitational force. the electromagnetic force. the strong force. ____ 38. Splitting a lead nucleus would yield a. b. c. a net release of energy. a net absorption of energy. neither absorption nor release of energy. ____ 39. A compass points north because the Earth is a huge magnet. a. b. True. False ____ 40. The elements beyond _______ in the periodic table have been produced through artificial transmutation. a. b. c. hydrogen lead uranium ____ 41. How much voltage is produced in the middle coil when the magnet is pushed in? a. b. c. twice as much as in the first coil half as much as in the first coil the same amount as in the first coil ____ 42. Why does a current-carrying wire deflect a magnetic compass? a. b. c. The compass reacts to the electric field. The current turns the wire into a permanent magnet. Moving charges produce a magnetic field. ____ 43. What is the difference between an ordinary piece of iron and a magnetized piece of iron? a. b. c. The ordinary piece of iron has non-magnetic domains. The magnetized piece of iron has aligned magnetic domains. The ordinary piece of iron has clusters of aligned atoms. ____ 44. What is the most damaging form of radiation? a. b. c. alpha particles gamma rays beta particles ____ 45. Magnetic field strength is a. b. c. strongest close to a magnet. constant everywhere around a magnet. strongest far from a magnet. ____ 46. If a primary coil with 10 turns feeds 50 volts to a secondary coil with 20 turns, what is the output voltage? a. b. c. 25 volts 100 volts 4 volts ____ 47. A device that transforms electrical energy to mechanical energy is a a. b. c. generator. transformer. motor. ____ 48. The rate of a chain reaction in a nuclear fission reactor is controlled by a. b. c. control rods. uranium rods. moderators. ____ 49. A nuclear process that has relatively few radioactive byproducts is a. b. c. neither fission nor fusion. fusion. both fission and fusion. ____ 50. A hypothetical atom has four distinct energy states. Assuming all transitions are possible, how many spectral lines can this atom produce? a. b. c. 3 5 more than 6 Carefully review your answers on this progress test and make any corrections you feel are necessary. When you are satisfied that you have answered the questions to the best of your ability, transfer your answers to the online test submission page in the presence of your proctor. The University of Nebraska is an equal opportunity educator and employer. ©2019, The Board of Regents of the University of Nebraska. All rights reserved.
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