The sound wave passes from the sea-water into the air.State what happens, if anything, to• the frequency of the sound, ...............................................................................................................................................................................................................• the speed of the sound. .....................................................................................................................................................................................................................[2][Total: 8]PhysicsAndMathsTutor.com
Question
The sound wave passes from the sea-water into the air.State what happens, if anything, to• the frequency of the sound, ...............................................................................................................................................................................................................• the speed of the sound. .....................................................................................................................................................................................................................[2][Total: 8]PhysicsAndMathsTutor.com
Solution
When the sound wave passes from the sea-water into the air, the following changes occur:
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Frequency of the sound: The frequency of the sound wave remains the same. The medium through which the sound wave is traveling does not affect its frequency. Therefore, there is no change in the frequency of the sound when it passes from sea-water into the air.
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Speed of the sound: The speed of sound changes when it passes from one medium to another. In general, sound travels faster in solids, slower in liquids, and even slower in gases. As the sound wave moves from sea-water to air, it transitions from a denser medium (water) to a less dense medium (air). This change in density causes the speed of sound to decrease. Therefore, the speed of the sound wave decreases when it passes from sea-water into the air.
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