English: In this case what happens is that the wave function ψ_(k)(x) = e^(ikx) with some normalization here and the energy of the particles E(k) is given as $\frac{\hslash^{2}k^{2}}{2m}$.
Telugu: ఈ సందర్భంలో ఏం జరుగుతుందంటే వేవ్ ఫంక్షన్ ψ_(k)(x) = e^(ikx).