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MMLU-Pro / 9902 / The spectrum of a particular light source consists of lines and bands stretching…

Problem

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question

The spectrum of a particular light source consists of lines and bands stretching from a wavelength of 5.0 × 10^-5 cm to 7.5 × 10^-5 cm. When a diffraction grating is illuminated normally with this light it is found that two adjacent spectra formed just overlap, the junction of the two spectra occurring at an angle of 45°. How many lines per centimeter are ruled on the grating?

category

physics

options

  1. 3200 per cm
  2. 5000 per cm
  3. 5300 per cm
  4. 4500 per cm
  5. 4900 per cm
  6. 4100 per cm
  7. 5650 per cm
  8. 4350 per cm
  9. 6000 per cm
  10. 4715 per cm

src

stemez-Physics

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