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Physics 8A: Light (photoelectric and dual nature)

Quiz by Sherry Felux-Bell

High School
Physics (2017)
Texas Essential Knowledge and Skills (TEKS)

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7 questions
Show answers
  • Q1
    Beta decay is the process in which a neutron is changed into a proton, electron, and antineutrino. Which fundamental force is most responsible for this reaction?
    Weak nuclear force
    Gravitational
    Strong nuclear force
    Electromagnetic
    120s
    112.39.c.8.a
  • Q2
    Bismuth is the largest stable, naturally occurring isotope. Which of the following statements provides a plausible explanation as a limiting factor for the existence of other larger naturally occurring isotopes?
    The nucleus is pulled apart as the protons move closer to the electrons.
    The strong nuclear force is only effective at very small distances.
    The electromagnetic force is no longer sufficient to hold the nucleus together.
    The strong nuclear force becomes repulsive at large distances.
    120s
    112.39.c.8.a
  • Q3
    Which of the following is not an example of the weak nuclear force?
    Radioactive decay
    Thermonuclear bombs
    Beta decay
    Carbon dating
    120s
    112.39.c.8.a
  • Q4
    The table below describes evidence for the four fundamental forces in nature. Which statements provide the best evidence for the strong and weak nuclear forces?
    Question Image
    I and II
    II only
    II and III
    II and IV
    120s
    112.39.c.8.a
  • Q5
    Which experiment provided evidence supporting the wave model of light?
    The diffraction of electrons in crystals
    The double slit experiment by Young
    The photoelectric effect
    The emission lines examined by Bohr
    120s
    112.39.c.8.a
  • Q6
    Which of the following best explains why electrons are not ejected when red light strikes a metal (zinc) surface?
    The intensity of red light is insufficient to eject an electron.
    The mass of a photon is insufficient to eject an electron.
    The interference of red light waves results in negligible energy on the surface.
    The energy of a photon is insufficient to eject an electron.
    120s
    112.39.c.8.a
  • Q7
    A student is attempting to maximize the number of electrons ejected from a metal surface by shining light on the surface. The student will use a laser tuned to a frequency that will eject electrons from metal. The laser has two dials that can adjust specific settings. One dial controls the amplitude of the light while the other dial controls the wavelength of light. Based on the information, which of the following changes would have the greatest impact in increasing the number of electrons ejected?
    Increasing the amplitude
    Decreasing the wavelength
    Increasing the wavelength
    Decreasing the amplitude
    120s
    112.39.c.8.a

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