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प्रश्न
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उत्तर
Loudness of a sound (L) and its intensity (I) are related as:
L = k log (I/Io),
Here, I/Io is the intensity level of the sound or the ratio between its intensity I and the threshold intensity Io, and k is the constant of proportionality depending upon the unit chosen.
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संबंधित प्रश्न
Which of the following determines the loudness of a sound wave?
How is loudness related to the amplitude of wave?
State three factors on which loudness of sound heard by a listener depends.
Two identical guitars are played by two persons to give notes of the same loudness and pitch. Will they differ in quality? Give reason for your answer.
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
What is the noise? Give an example.
Two waves of the same pitch have their amplitudes in the ratio 2 : 3.
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
