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Sundaram mishra Asked a Question
April 26, 2020 8:04 pmpts 2 pts
.The dispersion relation Ior a lattice wave propagating in a one dimensional chain of atoms of mass m bound together by force constant ß is given by the following equation. = 0, sin (ka/2), where a, - Here a is the distance between atoms. (a) For small values of 'K, show that the phase velocity is the same as the group velocity (b) Find the group and phase velocities at k=ada.
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  • Sundaram mishra
    thank you
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  • Vaishnavi rajora thankyou
    solution:
    • cropped8469767789485947878.jpg
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    Sundaram mishra
    thank you