WAEC - Physics (2001 - No. 28)
Which of the following statements about sound is correct?
when sound travels from air to a denser medium, it is refracted away from the normal at the point of incidence
sound travels faster in air than in water
the wavelength of sound changes when it travels from to water
the frequency of it travels from air to water
Explanation
When sound moves from air (a less dense medium) to water (a denser medium), its speed increases, leading to a change in wavelength while the frequency remains constant.
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