A simple harmonic motion is represented by $y\, = 5\,(\sin \,3\pi t\, + \,\sqrt 3 \,\cos \,3\pi t)\,cm$ The amplitude and time period of the motion are
  • A$10\,\,cm\,,\,\frac{2}{3}\,s$
  • B$10\,\,cm\,,\,\frac{3}{2}\,s$
  • C$5\,\,cm\,,\,\frac{3}{2}\,s$
  • D$5\,\,cm\,,\,\frac{2}{3}\,s$
JEE MAIN 2019, Medium
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