Superposition, Huygens and Two Slit Interference

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10 Questions - Developed by: Rachel and Hinch - Developed on: - 3.979 taken

Should be easy - if you were paying attention

  • 1
    Which of these is not a condition for destructive interference?
    The waves are antiphase
    The waves are in phase
    The waves are coherent
  • 2
    What does coherent mean?
    In phase
    Same source
    Same frequency
    Same wavelength
  • 3
    What is the central maximum?
    The line which is an equal distance from both slits
    The line where the greatest superposition occurs
    The point where the screen must be placed to get the interference pattern
  • 4
    If the two slits are 10mm apart and they produce an interference pattern on a screen 30cm away where the distance between the central maximum and the first subsidiary maximum us 25mm, what was the wavelength of the wave?
    8 1/3 mm
    1.2 mm
    5/6 mm
    120 mm
  • 5
    fringe width = 1.0cm
    wavelength = 0.1cm
    spacing between sources = 2.0cm
    What is the distance to the screen?
    20 cm
    2.0 cm
    0.05 cm
    10 cm
  • 6
    What is the main feature of Huygen's theory?
  • 7
    Why is the double slit experiment important?
    It proves waves are diffracted
    It proves that light acts like a particle
    It proves that light acts as a wave
  • 8
    What is the path difference for constructive superposition?
    (n + 1/2)λ
    (n + 1)λ
  • 9
    What do you get if a wave reflects back on itself?
    total destructive superposition
    an interference pattern
    A stationary wave
  • 10
    What is a node?
    the frequency at which a stationary wave is achieved
    a place of maximum amplitude
    a place of no displacement

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