1- The following graph represents the dependence of the oscillation (f) of adiatomic lattice in sec¹ units on the y-axis and the wave number k in m²¹ unitson the x-axis, given that Hooke's constant = 4 N/m²-1×1012frecuency20.010.00.0acoustic branch-optical branch-20.00.0Wavenumber (1/m)20.0×101220.010.00.0x10⁹frecuency (Hz)1- Calculate the masses of the two vibrating atoms?2- Determine the range of the forbidden frequency region?3- Determine the Debye Temperature?4- Calculate the maximum frequency and the frequency at the boundary if m₂ beequal to m1 (equal to the largest mass)? Then redraw the previous relation inthis case?5- Calculate the lattice constant (a) for the oscillating atoms

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1- The following graph represents the dependence of the oscillation (f) of a diatomic lattice in sec¹ units on the y-axis and the wave number k in m²¹ units on the x-axis, given that Hooke's constant = 4 N/m²