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A) At what angle will 650 nm light produce a first-order maximum when falling on a...

A) At what angle will 650 nm light produce a first-order maximum when falling on a grating whose slits are 1.94 × 10-3 cm apart?

B) At what angle will 506 nm light produce a second-order maximum when falling on a grating whose slits are 1.09 × 10-3 cm apart?

C) A grating that has 3,832 slits per cm produces a third-order fringe at a 20.9° angle. What wavelength of light is being used in nm?

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