A ruby laser beam is reflected from the surface of a CD onto a wall. The brightest spot is the reflected beam at an angle equal to the angle of incidence. However, fringes are also observed. If the wall is 1.8 m from the CD, and the first bright fringe is 0.880 m from the central maximum, what is the spacing (in m) of grooves on the CD
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A ruby laser beam is reflected from the surface of a CD onto a wall. The brightest spot is the refle...
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