Advertisements
Advertisements
Question
State three factors on which loudness of sound heard by a listener depends.
Advertisements
Solution
THREE FACTOR FOR LOUDNESS OF SOUND:
- Surface area of the sounding body. i.e. is directly proportional to the surface area of vibrating body.
- On the distance of the source of sound, i.e. decreases with distance.
- On amplitude of wave i.e. increases with amplitude.
APPEARS IN
RELATED QUESTIONS
Loudness is determined by the __________ of vibration.
Name the factor that determines Quality of the note
Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.
State one important property of waves used for echo depth sounding.
Explain the mechanism of the formation of a longitudinal wave when the source vibrates in the air.
Name the characteristic of the sound affected due to a change in its
(a) amplitude (b) waveform (c) frequency.
Name the factors which determine the loudness of a note.
Two musical notes of the same pitch and loudness are played on a violin and a piano. Their waveforms are as shown in the figure below:

A 0.6 m long stretched wire is made to vibrate in two different modes as shown in figure
(a)

(b)

(i) If the frequency of the note produced in (b) is n, what is the frequency in case (a)?
(ii) In which case (a) or (b), is the note louder? Give reasons.
(iii) In which case is the pitch higher? Give reason.
