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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The Answer of 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

A Diffraction Grating Has 450 Lines Per Millimeter