Physics 101, 15063 Quiz prts 6-7 ID form CC No 04 Fall 2002

MULTIPLE CHOICE: Choose the one alternative that best completes the statement or answers the question.

  1. Electrical forces inside a nucleus contribute nuclear: A) stability. B) instability. C) both of these. D) none of these.
  2. Most alpha particles fired at a gold foil pass through undeflected because the: A) electric field is zero inside the gold: B) gold atoms, unlike most other metal atoms, are relatively far apart. C) atoms of gold, like any others, are mostly empty space. D) net charge of the gold atoms is zero. E) none of these.
  3. When a beta particle is ejected from a nucleus, the nucleus then has slightly: A) greater mass and charge. B) greater mass and smaller charge. C) smaller mass and significantly greater charge. D) smaller charge and significantly greater mass.
  4. An inventor proposes to equip an office with a polarized source of background music and let those who prefer not to hear it wear polarizing earplugs. His idea is: A) a good one - giving people a choice. B) too expensive. C) too much bother. D) nonsense - you can't polarize a sound wave.
  5. Ultraviolet light is: A) more energetic than X-rays. B) produced by crossed Polaroids. C) electromagnetic energy. D) present everywhere. E) none of these.
  6. In the process of fluorescence, the input is high-frequency light and the output is: A) higher-frequency light. B) equally high-frequency light. C) lower-frequency light.
  7. To say that energy levels in an atom are discrete is to say the energy levels are well defined and: A) separate from one another. B) separated from one another by the same energy increments. C) continuous. D) private.
  8. A mixture of cyan and yellow pigments appears: A) orange. B) green. C) magenta. D) blue. E) blackish brown.
  9. Iridescent colors seen in the pearly luster of an abalone shell are due to: A) refraction. B) diffraction. C) dispersion. D) polarization. E) interference.
  10. The atomic number of an element is the same as the number of its A) protons. B) neutrons. C) nucleons. D) neither of these.
  11. When U-235 undergoes fission, the two nuclei that result have a total of: A) 90 protons. B) 91 protons. C) 92 protons. D) 93 protons. E) 94 protons.
  12. In the double-slit experiment with electrons, the electrons arrive at the screen in a: A) particle-like way with a pattern that is particle-like. B) particle-like way with a pattern that is wave-like. C) wave-like way with a pattern that is particle-like. D) wave-like way with a pattern that is wave-like.
  13. The half-life of an isotope is one day. At the end of two days the amount that remains is: A) none. B) one half. C) one quarter D) one eighth. E) none of these.
  14. If an electric charge is shaken up and down: A) sound is emitted. B) light is emitted. C) electron excitation occurs. D) a magnetic field is created. E) its mass decreases.
  15. Compared to the energy of a photon of red light, the energy of a photon of blue light is: A) less. B) more. C) the same.
  16. When light reflects from a surface, there is a change in its: A) frequency. B) wavelength. C) speed. D) all of these. E) none of these.
  17. A sphere of pure U-235 will explode if it is: A) hot enough. B) shaken hard enough. C) big enough. D) small enough.
  18. The reason diamonds display many colors is that: A) diamonds are extremely hard. B) a diamond reflects much more light than it absorbs. C) diamonds are forever. D) different colors of light undergo different changes of speed when exiting a diamond. E) none of these.
  19. If sunlight were green instead of white, the most comfortable color to wear on a cold day would be: A) magenta. B) yellow. C) green. D) blue. E) violet.
  20. Some double-pane airplane windows darken when the inner pane is rotated. The panes are: A) thin films. B) Polaroid filters. C) optical fibers.