ch36-p042 - 42. (a) We note that the slope of the graph is...

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() max max 11077 nm sin 25.5 435 nm dd m θ λλ == = which indicates (on one side of the interference pattern) there are 25 bright fringes. Thus on the other side there are also 25 bright fringes. Including the one in the middle, then, means there are a total of 51 maxima in the interference pattern (assuming, as the problem remarks, that none of the interference maxima have been eliminated by diffraction minima). (c) Clearly, the maximum closest to the axis is the middle fringe at = 0°. (d) If we set m = 25 in Eq. 36-25, we find
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