Question: 2. Consider a general diatomic chain with two different masses m, and m2 as well as two different spring constants K1 and K2 and lattice

2. Consider a general diatomic chain with two different masses m,

2. Consider a general diatomic chain with two different masses m, and m2 as well as two different spring constants K1 and K2 and lattice constant a. (a) Calculate the dispersion relation for this system. (only need to show w2) (b) Calculate the acoustic mode velocity. (c) Determine the optical mode w at the k = 0. =

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