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White light (380nm-750nm) strikes a diffraction grating (800 lines/mm) at normal incidence. What is the highest-order...

White light (380nm-750nm) strikes a diffraction grating (800 lines/mm) at normal incidence. What is the highest-order visible maximum that is formed?(The 3% margin of error does not apply for this question)


6. A spy camera is said to be able to read the numbers on a car's license plate. If the numbers on the plate are 6.60 cm apart, and the spy satellite is at an altitude of 220 km, what must be the diameter of the camera's aperture? (Assume light with a wavelength of 560 nm.)
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