A) \[\frac{1}{8}\]sec
B) \[\frac{1}{6}\]sec
C) \[\frac{1}{4}\]sec
D) \[\frac{1}{3}\]sec
Correct Answer: C
Solution :
\[y=a\sin \frac{2\pi }{T}t\] Þ \[\frac{a}{2}=a\sin \frac{2\pi t}{3}\]Þ \[\frac{1}{2}=\sin \frac{2\pi t}{3}\] Þ sin\[\frac{2\pi t}{3}=\sin \frac{\pi }{6}\] Þ \[\frac{2\pi t}{3}=\frac{\pi }{6}\] Þ \[t=\frac{1}{4}\sec \]You need to login to perform this action.
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