3) (Problem 5-12 in P³) (a) Starting with the equation for group velocity derived in class, show explicitly that it can be rewritten as (dvp) 15 Vg = Vp - 2 (b) Find the group velocity for plane waves in a dispersive medium, for which Vp = A + Bλ, where both A and B are constants. Interpret the result.
3) (Problem 5-12 in P³) (a) Starting with the equation for group velocity derived in class, show explicitly that it can be rewritten as (dvp) 15 Vg = Vp - 2 (b) Find the group velocity for plane waves in a dispersive medium, for which Vp = A + Bλ, where both A and B are constants. Interpret the result.
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Transcribed Image Text:3) (Problem 5-12 in P³) (a) Starting with the equation for group velocity derived in
class, show explicitly that it can be rewritten as
v = vp - 1 (dup)
(b) Find the group velocity for plane waves in a dispersive medium, for which
Vp = A + B2, where both A and B are constants. Interpret the result.
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