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Stationary waves are formed in an acoustic medium by combining two simple harmonic waves in such a way that the point x = 0 is a node. The equation of one of the waves is y = a cos (ωt − kx). The equation of the other wave is (1) y = a cos (ωt + kx) (2) y = a sin (ωt + kx) (3) y = − a cos (ωt + kx) (4) y = − a sin (ωt − kx)

Answer» <p></p><p class="MsoNormal" style="text-align: justify;"><span style="color:#000000"><span style="font-family:Arial,Helvetica,sans-serif"><strong><span style="background-attachment:initial; background-clip:initial; background-image:initial; background-origin:initial; background-position:initial; background-repeat:initial; background-size:initial">The Correct option is (1) y = a cos (ωt + kx)</span></strong></span></span></p><p></p>


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