A) v = 5cm
B) \[\lambda =18cm\]
C) a = 0.04 cm
D) f=50Hz
Correct Answer: B
Solution :
[b] The standard equation of a progressive wave is \[y=a\,\sin \left[ 2\pi \left( \frac{t}{T}-\frac{x}{\lambda } \right)+\phi \right]\] The given equation can be written as \[y=4\sin \left[ 2\pi \left( \frac{t}{10}-\frac{x}{18} \right)+\frac{\pi }{6} \right]\] \[\therefore \,a=4cm,\,T=10s,\,\lambda =18cm\] and \[\phi =\pi /6\] Hence, [b] is correct.You need to login to perform this action.
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