If the seventh bright fringe on the detector is 100 cm away


In a two-slit experiment, the slit separation is 3.80 × 10-5 m. The interference pattern is recorded on a flat screen-like detector that is 2.00 m away from the slits. If the seventh bright fringe on the detector is 10.0 cm away from the central fringe, what is the wavelength of the light passing through the slits?

  • 281 nm
  • 271 nm
  • 291 nm
  • 261 nm
  • 100 nm

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Physics: If the seventh bright fringe on the detector is 100 cm away
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