1.

Equation of a progressive wave is given by \[y=4\sin \left[ \pi \left( \frac{1}{5}-\frac{x}{9} \right)+\frac{\pi }{6} \right]\] Then which of the following is correct?

A. v = 5cm
B. \[\lambda =18cm\]
C. a = 0.04 cm
D. f=50Hz
Answer» C. a = 0.04 cm


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