A longitudinal wave is moving through a medium. Which of the following statements about the direction of propagation of wave and displacement of the medium is true?
Correct answer: A. Displacement of medium = parallel to the energy transfer direction of propagation of wave = parallel to the energy transfer.
- A. Displacement of medium = parallel to the energy transfer direction of propagation of wave = parallel to the energy transfer.
- B. Displacement of medium = parallel to the energy transfer direction of propagation of wave = perpendicular to the energy transfer
- C. Displacement of medium = perpendicular to the energy transfer direction of propagation of wave = parallel to the energy transfer.
- D. Displacement of medium = perpendicular to the energy transfer direction of propagation of wave = perpendicular to the energy transfer.
Explanation
Option A is correct since it mentions the characteristics of a longitudinal wave.Option B is incorrect since it mentions the characteristics of a transverse wave.Option C is incorrect since it mentions the characteristics of a transverse wave in an opposite way.Option D is incorrect since it mentions the characteristics of a transverse wave but the first statement is wrong.
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About Progressive Waves
Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
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