Respuesta :
I think wavelength because the radios volume is being turned up.
When we increase the volume of a radio, its loudness increases.
The volume of a radio is related to its loudness. The louder the radio the greater its volume. Also, the loudness is related to amplitude of the sound waves. If you increase the volume of radio, you increase the amplitude of the sound waves and the sound becomes louder.
Therefore, the loudness will change when you turn up the volume of your radio set.
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