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NEET 2011 (AIPMT, Prelims) · Progressive Wave Equation

Progressive Wave Equation question from NEET 2011 (AIPMT, Prelims)

Q90NEET 2011 · AIPMT · PRELIMSEasy

Progressive Wave Equation

Two waves are represented by the equations

y1 = aasin(ω\omegat + kx + 0.57) m and

y2 = acos(ω\omegat + kx) m, where x is in meter and t in\text{in} sec. The phase difference between them is

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Answer: (a)

  1. y2=acos⁡(ωt+kx)=asin⁡(ωt+kx+1.57)y_2 = a\cos(\omega t + kx) = a\sin(\omega t + kx + 1.57)
  2. Δϕ=1.57−0.57=1.0\Delta\phi = 1.57 - 0.57 = 1.0 rad
  3. So the answer is (a) 1.0 radian.
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