A Diffraction Grating Has 300 Lines Per Mm

question 39

Multiple Choice

A diffraction grating has 300 lines per mm. If light of frequency 4.76 × 10¹⁴ Hz is sent through this grating, at what angle does the first order maximum occur? (c = 3.00 × 10⁸ m/s)

• A) 56°
• B) 44°
• C) 22°
• D) 11°
• E) 28°

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