What is the unit of loudness? What is approximate loudness of a whisper?
What is the loudness of a normal conversation in decibels?
(a) What is meant by the 'loudness' of sound ? On what factor does the loudness of a sound depend ?
(b) Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
What determines the loudness of a sound? What is the unit of loudness? [2 MARKS]