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QJEEM19Ph7a83: JEE Main 2019 Physics - Class 11 JEEM19Ph7a83 Solution: A travelling harmonic wave is represented by the equation…

A travelling harmonic wave is represented by the equation y(x,t) = 10–3sin (50t + 2x), where, x and y are in mater and t is in seconds. Which of the following is a correct statement about the wave ?

Multiple Choice Options

  • A The wave is propagating along the positive x-axis with speed 100 ms–1
  • B The wave is propagating along the positive x-axis with speed 25 ms–1
  • C The wave is propagating along the negative x-axis with speed 25 ms–1
  • D The wave is propagating along the negative x-axis with speed 100 ms–1

Step-by-Step Verified Solution

y = a sin(ωt + kx)

⇒  wave is moving along −ve x-axis with speed

v = ωK ⇒  v = 502 = 25m/sec

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