Diffraction Grating: an 18-Mm Wide Diffraction Grating Has Rulings of 880

question 47

Multiple Choice

Diffraction grating: An 18-mm wide diffraction grating has rulings of 880 lines per mm. Monochromatic light of 590 nm wavelength is incident normally on the grating. What is the largest angle, measured from the central bright spot, at which an intensity maximum is formed?

• A) 31°
• B) 29°
• C) 27°
• D) 25°
• E) 23°

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