A 17-Mm-Wide Diffraction Grating Has Rulings of 530 Lines Per $402 \mathrm {~nm}$

question 134

Multiple Choice

A 17-mm-wide diffraction grating has rulings of 530 lines per millimeter. White light is incident normally on the grating. What is the longest wavelength that forms an intensity maximum in the fifth order?

• A) \(402 \mathrm {~nm}\)
• B) \(377 \mathrm {~nm}\)
• C) \(352 \mathrm {~nm}\)
• D) \(427 \mathrm {~nm}\)
• E) \(452 \mathrm {~nm}\)

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