Question: A grating has 600 rulings / mm and is 5.0 mm wide. (a) What is the smallest wavelength interval it can resolve in the third

A grating has 600 rulings / mm and is 5.0 mm wide.
(a) What is the smallest wavelength interval it can resolve in the third order at λ = 500 nm?
(b) How many higher orders of maxima can be seen?

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