Loudness of sound from a point source is 40 dB at 1m. Loudness reduces to 20 dB at a dis†an ce from the point source which is equal to

Loudness of sound from a point source is 40 dB at 1m. Loudness reduces

1.	Loudness of sound from a point source is 40 dB at 1m. Loudness reduces to 20 dB at a dis†an ce from the point source which is equal to
Answer» Loudness of sound from a point source is 40 dB at 1m. Loudness reduces to 20 dB at a dis†an ce from the point source which is equal to