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प्रश्न
What do you understand by the loudness of sound?
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उत्तर
Loudness is the property by virtue of which a loud sound can be distinguished from a faint one, both having the same pitch and quality.
संबंधित प्रश्न
The pitch of a stringed instrument is increased by .................. tension in string.
How is the pitch of sound in a guitar changed if (a) thin wire is used, (b) wire under less tension is used?
Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and (ii) pitch
Explain the following and illustrate your answer by drawing appropriate diagram:
Pitch
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
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.
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
