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Light of wavelength 631 nm passes through a diffraction grating having 360 lines/mm . Part A.)...

Light of wavelength 631 nm passes through a diffraction grating having 360 lines/mm .

Part A.) What is the total number of bright spots (indicating complete constructive interference) that will occur on a large distant screen? Solve this problem without finding the angles. (Hint: What is the largest that sin? can be? What does this imply for the largest value of m?)
Express your answer as an integer.

Part B.) What is the angle of the bright spot farthest from the center?

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