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प्रश्न
What is the range of frequencies associated with ultrasound?
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उत्तर
Frequencies higher than 20 kHz are called ultrasonic sound or ultrasound.
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संबंधित प्रश्न
What is the range of frequencies associated with infrasound?
Fill in the blanks with suitable words.
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(i) 10 Hz
(ii) 100 Hz
(iii) 10,000 Hz
(iv) 15 Hz
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