A laser emits two wavelengths (?1 = 420 nm; ?2 = 630 nm).
Chapter 28, Problem 73P(choose chapter or problem)
Problem 73P
A laser emits two wavelengths (λ1 = 420 nm; λ2 = 630 nm). When these two wavelengths strike a grating with 450 lines/mm, they produce maxima (in different orders) that coincide.
(a) What is the order (m)of each of the two overlapping lines?
(b) At what angle does this overlap occur?
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