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प्रश्न
The unit of loudness is _______.
विकल्प
cm
second
hertz
decibel
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उत्तर
The unit of loudness is decibel.
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संबंधित प्रश्न
The distance from one compression to nearest rarefaction is called wavelength.
Sound can not travel in
Name the characteristic of the sound affected due to a change in its
(a) amplitude (b) waveform (c) frequency.
How is the pitch of sound in a guitar changed if (a) thin wire is used, (b) wire under less tension is used?
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical 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:
The diagram below shows three ways in which the string of an instrument can vibrate.
(i) Which of the above diagrams shows the fundamental note?
(ii) Which has the frequency 4 times that of the fundamental?
(iii) State the ratio between the frequency of the first and second.
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
The loudness of a sound depends on its pitch.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
