Wave Mechanics Question 631
Question: In a plane progressive harmonic wave particle speed is always less than the wave speed if
Options:
A) amplitude of wave is less than $ \frac{\lambda }{2\pi } $
B) amplitude of wave is greater than $ \frac{\lambda }{2\pi } $
C) amplitude of wave is less than $ \lambda $
D) amplitude of wave is greater than $ \frac{\lambda }{\pi } $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ v _{p}<v $ or $ \omega A<f\lambda $ or $ A<\frac{f\lambda }{\omega } $ or $ \frac{\lambda }{2\pi } $