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____________involves a change in direction of waves as they pass through an opening or around a barrier in their path.
1. Resonance of sound
2. Interference of sound
3. Diffraction of sound
4. None of the above

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Correct Answer - Option 3 : Diffraction of sound

The correct answer is the Diffraction of sound.

  • Diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path.

  • Diffraction takes place with sound; with electromagnetic radiation, such as light, X-rays, and gamma rays.
  • It also takes place with very small moving particles such as atoms, neutrons, and electrons, which show wavelike properties.
  • The amount of diffraction increases with increasing wavelength and decreases with decreasing wavelength.
  • Diffraction helps to determine the direction in which most sound will be radiated.

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