The energy of a sound wave as it travels through a medium decreases
What is energy of a sound wave ?
It is the physical vibration waves that travel through the air to reach the ears . Sound energy is the result when force makes an object vibrate.
A wave can lose energy as it travel through a medium because medium can also absorb the energy . The medium changes some of the acoustic energy of the sound wave into heat .
correct option is d) it decreases
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