Topic: Electromagnetics
A non dispersive media has
- A. Group velocity > phase velocity
- B. Group velocity < phase velocity
- C. Group velocity = phase velocity
- D. None of above
Answer: C. Group velocity = phase velocity
Explanation: In non-dispersive media, the speed of wave is independent of frequency. Here the carrier wave propagates at the phase speed, the modulation envelope propagates at the group speed. Thus, the non-dispersive media, both the phase velocity and group velocity are same.