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Light Maze: The Wave Game

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  • Which instrument uses a movable mirror to measure small path differences?
    Michelson’s Interferometer.
  • What is the condition for constructive interference in Young’s Double Slit Experiment?
    Path difference = nλ, where n is an integer.
  • What is the formula for fringe width in Young's Double Slit Experiment?
    β = λD/d (where D = screen distance, d = slit separation)
  • What changes in Michelson’s interferometer when the mirror is moved by 1 micron?
    Two fringes shift (as path difference changes by 2 microns).
  • What kind of wavefront does a point source produce in interference experiments?
    Spherical wavefront.
  • In YDSE, what happens to fringe width if the wavelength is doubled?
    Fringe width also doubles.
  • Which type of interference (constructive or destructive) results in a dark fringe?
    Destructive interference.
  • Why do we see circular fringes in Newton’s ring setup instead of straight lines?
    Due to symmetrical air film between lens and glass plate.
  • Name the device that uses interference to precisely measure wavelengths of light.
    Michelson’s Interferometer.
  • Which phenomenon causes the formation of bright and dark fringes in Newton’s Rings?
    Interference of reflected light.
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