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प्रश्न
Name the unit in which the loudness of sound is expressed.
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उत्तर
Unit of the loudness of sound is expressed in decibel(dB)
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संबंधित प्रश्न
A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Decibel is the unit of pitch of a sound.
In a piano, pitch is decreased by
- Which of the following quality determines the loudness of a sound wave?
- wavelength
- frequency and
- amplitude
- How is loudness related to the quantity mentioned above in part (a)?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
Explain the following and illustrate your answer by drawing appropriate diagram:
Loudness
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
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.
