White light of wavelength ranging from 400 nm to 700
White light of wavelength ranging from 400 nm to 700 nm is used for a diffraction grating with 6500 lines per centimeter.
(a) In a particular order of maximum, red color will have (1) a larger, (2) the same, or (3) a smaller angle than blue color. Explain.
(b) Calculate the angles for 400 nm and 700 nm in the second-order maximum.
(c) What is the angular width of the whole spectrum in the second order?
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