Kanika switched ON the television to listen to her favourite music. After sometime, she heard a loudspeaker sound coming from her neighbour house. Then, she switched OFF the television and closed her ears, so that loudspeaker sound should not enter her ears.
(a) State the type of sound coming from the television.
(b) Explain how Kanika as able to distinguish between the category of sound?
(c) Mention whether the sound coming from TV and loudspeaker was audible or inaudible.
(d) Give the value displayed by Kanika here.