The S.I. unit of intensity is
Hertz
Decibel
Metre
m/s
The S.I. unit of intensity is decibel.
The intensity of sound wave while passing through an elastic medium falls
down by 10% as it covers one metre distance through the medium. If the
initial intensity of the sound wave was 100 decibels, its value after it has
passed through 3 metre thickness of the medium will be