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प्रश्न
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
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उत्तर
Sonic vibrations: Sonic vibrations are also known as audio vibrations.
Those vibrations whose frequency is from 20 hertz to 20000 hertz are known as sonic vibrations. The range of sonic vibrations is from 20 vibrations per second to 20000 vibrations per second.
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| I | II |
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| III | IV |
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