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Standard VIII
Physics
Question

What kind of sound - noise or music is represented by the sound wave shown here.
284015_105dfa3802694ccbbcf943e2551424d1.png

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Solution
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A musical sound is periodic and regular, whereas noise is irregular and nonperiodic.
In a musical sound, wave patterns are repeating whereas a noise has an irregular wave pattern.
As in the given figure, we have a repeating wave pattern, so it is a musical sound.

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What kind of sound - noise or music is represented by the sound wave shown here.
284015_105dfa3802694ccbbcf943e2551424d1.png
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Q2

(a) What is the noise? Give two examples of sounds which are considered noise.

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