Question

_____ is the relation bettween group velocity and beta in equation form
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Answer 1

Answer:

Group velocity, vg, is the ratio of the apparent change in frequency ω to the associated change in the phase propagation constant β;

Answer 2

The Group Velocity and Phase Velocity relation can be mathematically written as-

\(V_{g}=V_{p}+k\frac{dV_{p}}{dk}\)

Where,

Vg is the group velocity.

Vp is the phase velocity.

k is the angular wavenumber.

Group Velocity and Phase Velocity relation for Dispersive wave non-dispersive wave