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A laser beam of unknown wavelength passes through a diffraction grating having 5590lines/cm after striking it perpendicularly. Taking measurements, you find that the first pair of bright spots away from the central maximum occurs at ± 15.2 degrees with respect to the original direction of the beam.

What is the wavelength of the light?

At what angle will the next pair of bright spots occur?

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  • Category:- Physics
  • Reference No.:- M9857697

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