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A 419 lines/millimeter transmission diffraction grating is illuminated with light of wavelength 466 nanometers.

a) Find at what angle in degrees with respect to the central maximum will the first-order maximum lie?

b) Compute what would be the new angle in degrees if we illuminate the grating with light of wavelength 423 nm?

c) Determine the separation in meters of the first bright maxima due to both wavelengths on the screen if the screen is 1.15 meter away from the grating?

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