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MHT CET202615 April 2026Evening ShiftPhysicsWaves and SoundActual

A simple harmonic progressive wave is represented by y = A (120 t + 3x) . The distance between two points on the wave at a phase difference of 3 radian is

Options

  1. A6 m
  2. B9 m
  3. C2 9 m
  4. D18 m

Correct answer

B. 9 m

Step-by-step solution

Comparing the given equation y = A (120 t + 3x) with the standard wave equation y = A ( t + kx) , we get k = 3 . The relation between phase difference and path difference x is given by = k x . Substituting the given values: 3 = 3 x x = 9 m. Answer: 9 m

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