The waves that require a material medium for their propagation are called__________________?
Correct answer: D. mechanical waves
- A. matter waves
- B. electromagnetic waves
- C. carrier waves
- D. mechanical waves
Explanation
Mechanical waves need particles of a material medium to pass the disturbance from one place to another, so they cannot propagate through a vacuum. Examples include sound waves and waves on a stretched string. The likely mistake is choosing electromagnetic waves, which can travel through vacuum without a material medium.
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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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