Which of the following statements is not a correct description of the dispersive waves? a. The wave packet formed from such waves propagates without changing size or shape as the velocity is constant. O b. The wave packet has a group velocity defined by v =d@/dk: O c. The group velocity explain the motion of a localized disturbance due to constructive intereference of two or more waves. O d. If the wave packet has a narrow range of wave numbers -Ak to k+Ak; the velocity of propagation is well defined.
Which of the following statements is not a correct description of the dispersive waves? a. The wave packet formed from such waves propagates without changing size or shape as the velocity is constant. O b. The wave packet has a group velocity defined by v =d@/dk: O c. The group velocity explain the motion of a localized disturbance due to constructive intereference of two or more waves. O d. If the wave packet has a narrow range of wave numbers -Ak to k+Ak; the velocity of propagation is well defined.
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Transcribed Image Text:QUESTION 7
Which of the following statements is not a
correct description of the dispersive waves?
a. The wave packet formed from such
waves propagates without changing
size or shape as the velocity is
constant.
O b. The wave packet has a group
velocity defined by v =dw/dk
c. The group velocity explain the
motion of a localized disturbance
due to constructive intereference of
two or more waves.
d. If the wave packet has a narrow
range of wave numbers k - Ak to
k+Ak the velocity of propagation
is well defined.
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