Q78
Given a wave with the dispersion relation, ω = ck + m for k > 0 and m > 0, which one of the following is true?
A.
The group velocity is greater than the phase velocity
B.
The group velocity is less than the phase velocity
AnswerC.
The group velocity and the phase velocity are equal
D.
There is no definite relation between the group velocity and the phase velocity
Answer: Option B
Solution
Answer: Option B
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