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MHT CET Medical202626 April 2026Morning ShiftPhysicsWaves and SoundActual

A progressive wave is given by Y = 6 (3t - 2x) m. On this wave, how far away are the two points having phase difference of 45^ ?

Options

  1. A16 m
  2. B8 m
  3. C4 m
  4. D2 m

Correct answer

B. 8 m

Step-by-step solution

The given equation of the progressive wave is Y = 6 (3t - 2x) . Comparing this with the standard wave equation Y = A ( t - kx) , we get the wave number k = 2 . The phase difference between two points separated by a distance x is given by = k x . Given = 45^ = 4 rad. Substituting the values, we get: 4 = 2 x x = 8 m. Answer: 8 m

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