normally on the grating.a) What is the largest angle, measured from the central bright spot, at which an intensity maximum is formed? What is the order of this maximum? Recall the angle cannot be greater than 90 degrees. b) A gas with index of refraction n fills the room and causes the 5th order maximum to appear at the original position of the 1\deg order maximum. What is the index of refraction n of the gas?

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A diffraction grating has rulings of 880 lines per mm.
Monochromatic light of 590 nm wavelength is incident
normally on the grating.a) What is the largest angle,
measured from the central bright spot, at which an
intensity maximum is formed? What is the order of this
maximum? Recall the angle cannot be greater than 90
degrees. b) A gas with index of refraction n fills the
room and causes the 5th order maximum to appear at
the original position of the 1\deg order maximum. What
is the index of refraction n of the gas?
Transcribed Image Text:A diffraction grating has rulings of 880 lines per mm. Monochromatic light of 590 nm wavelength is incident normally on the grating.a) What is the largest angle, measured from the central bright spot, at which an intensity maximum is formed? What is the order of this maximum? Recall the angle cannot be greater than 90 degrees. b) A gas with index of refraction n fills the room and causes the 5th order maximum to appear at the original position of the 1\deg order maximum. What is the index of refraction n of the gas?
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