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NEET 2012 (AIPMT, Mains) · Progressive Wave Equation

Progressive Wave Equation question from NEET 2012 (AIPMT, Mains)

Q88NEET 2012 · AIPMT · MAINSEasy

Progressive Wave Equation

The equation of a simple harmonic wave is given by

y = 3 sinπ2\frac{\pi}{2} (50t −- x),

where x and y are in metres and t is in seconds. The ratio of maximum particle velocity to the wave velocity is

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Answer: (b)

  1. y=3sin⁡(25πt−π2x)y = 3\sin\left(25\pi t - \frac{\pi}{2}x\right), so A=3A = 3 m, k=π2 m−1k = \frac{\pi}{2}\ \text{m}^{-1}.
  2. vmaxv=Ak=3×π2=3π2\frac{v_{max}}{v} = Ak = 3 \times \frac{\pi}{2} = \frac{3\pi}{2}
  3. So the answer is (b) 3π2\frac{3\pi}{2}.
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