A grating made of 5550 slits/cm has red light of 0.680 nm incident on it. The light shines through the grating onto a screen that is 5.50 m away, (a) What is the distance between adjacent slits on the grating? (b) How far from the central bright spot is the first-order maximum on the screen? (c) How far from the central bright spot is the second-order maximum on the screen? (d) Can you assume in this problem that sinθ = tan θ? Why or why not?
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