A Diffraction Grating Has 450 Lines Per Millimeter

question 65

Multiple Choice

A diffraction grating has 450 lines per millimeter.What is the highest order m that contains the entire visible spectrum from 400 nm to 700 nm?

• A)m = 2
• B)m = 3
• C)m = 4
• D)m = 5
• E)m = 6

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