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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
The frequency is measured in second.
Name the unit in which the loudness of sound is expressed.
Figure shows four waves A, B, C, and D
Name the wave which shows
(a) a note from a musical instrument,
(b) a soft note
(c) a shrill note.
Name the unit in which loudness of sound is measured.
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
How does the two sounds of same loudness and same pitch produced by different instruments differ? Draw diagrams to illustrate your answer.
A man playing a flute is able to produce notes of different frequencies. If he closes the holes near his mouth, will the pitch of the note produced, increase or decrease? Give a reason.
Explain the following and illustrate your answer by drawing appropriate diagram:
Frequency
What is meant by the ‘loudness’ of a sound? How is it related to the intensity?
What does the intensity of sound depend upon?
