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प्रश्न
Ultrasound has frequency of vibration
विकल्प
between 20 and 20,000 Hz
below 20 Hz
above 20,000 Hz
between 500 and 10,000 Hz
MCQ
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उत्तर
above 20,000 Hz
Explanation:
Ultrasound has frequency of vibration above 20000 Hz.
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संबंधित प्रश्न
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