1. Discuss the phenomenon of dispersion.
2. Discuss the concept of group velocity with the aid of an example.
3. What is a dispersion diagram? Explain how the phase and group velocities can be determined from a dispersion diagram.
4. When is it meaningful to attribute a group velocity to a signal comprised of more than two frequencies? Why?
5. Discuss the propagation of a narrow-band amplitude modulated signal in a dispersive channel.