Physics · Wave motion, longitudinal and transverse waves, speed of the travelling wave, displacement relation for a progressive wave

During propagation of longitudinal plane wave in a medium, two particles separat

During propagation of longitudinal plane wave in a medium, two particles separated by a distance equivalent to one wavelength at an instant will be/have

  • A. In phase, same displacement
  • B. In phase, different displacement
  • C. Different phase, same displacement
  • D. Different phase, different displacement

Step-by-step solution

Two particles separated by exactly one wavelength are at corresponding points on the wave cycle, meaning they have the same phase. In a sinusoidal longitudinal wave, points with the same phase also have identical displacement from equilibrium at any given instant.
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