A) 25, 100
B) 25, 1
C) 25, 2
D) 50\[\pi ,\] 2
Correct Answer: B
Solution :
Given equation is \[y=25\,\cos \,(2\pi t-\pi x)\] ...(1) Standard equation is \[y=A\,\cos \,(\omega t-kx)\] ...(2) Comparing (1) and (2), Amplitude\[A=25,\,\omega =2\pi ,\,k=\pi \] \[\therefore \]Frequency, \[n=\frac{\omega }{2\pi }=\frac{2\pi }{2\pi }=1Hz\]You need to login to perform this action.
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