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Date//Page no: 10RELATIONVabolyBETWEENV2PHASEVELOCITY(VAND GROUP

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The phase velocity is: vp = w/k. The function w(k), which gives w as a function of k, is known as the dispersion relation. If w is directly proportional to k, then the group velocity is exactly equal to the phase velocity. A wave of any shape will travel undistorted at this velocity



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