A wave disturbance travelling in air enters a medium in which its velocity is less…

Physics JAMB 1990

A wave disturbance travelling in air enters a medium in which its velocity is less than that in air. Which of the following statements is true about the wave medium?

  • both the frequency of the wave and the wavelength are decreased
  • the frequency of the wave is decreased while the wavelength is increased
  • the frequency of the wave is unaltered while the wavelength is decreased checkmark
  • the frequency of the wave is decreased while the wavelength is unaltered

The correct answer is: C

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