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?
- A. both the frequency of the wave and the wavelength are decreased
- B. the frequency of the wave is decreased while the wavelength is increased
- C. the frequency of the wave is unaltered while the wavelength is decreased
- D. the frequency of the wave is decreased while the wavelength is unaltered
Correct Answer: C. the frequency of the wave is unaltered while the wavelength is decreased
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