A beam of coherent monochromatic light from a distant galaxy is used in an optics experiment...
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A beam of coherent monochromatic light from a distant galaxy is used in an optics experiment on Earth. The beam is incident normally on a double slit. The distance between the slits is 0.300 mm. A screen is at a distance Dfrom the slits. The diffraction angle fis labelled. beam 0.300 mm screen S (a.i) A series of dark and bright fringes appears on the screen. Explain how a dark fringe is formed. 13 (aji) The wavelength of the beam as observed on Earth is 633.0 nm. The separation between a dark and a bright fringe on the screen is 4.50 mm. Calculate D. The air between the slits and the screen is replaced with water. The refractive index of water is 1.33. (b.i) Calculate the wavelength of the light in water. (b.ii) State two ways in which the intensity pattern on the screen changes. [2] A beam of coherent monochromatic light from a distant galaxy is used in an optics experiment on Earth. The beam is incident normally on a double slit. The distance between the slits is 0.300 mm. A screen is at a distance Dfrom the slits. The diffraction angle fis labelled. beam 0.300 mm screen S (a.i) A series of dark and bright fringes appears on the screen. Explain how a dark fringe is formed. 13 (aji) The wavelength of the beam as observed on Earth is 633.0 nm. The separation between a dark and a bright fringe on the screen is 4.50 mm. Calculate D. The air between the slits and the screen is replaced with water. The refractive index of water is 1.33. (b.i) Calculate the wavelength of the light in water. (b.ii) State two ways in which the intensity pattern on the screen changes. [2]
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Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
Posted Date:
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