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What are ultrasonic waves

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What are ultrasonic waves

    • Posted by Keerat Sharma 8 years, 4 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Mehak Hira 8 years, 4 months ago

    Sound waves above 20Khz or 20000 Hz are called Ultrasonic waves

    1Thank You

    Anjali Pandit 8 years, 4 months ago

    The sound above 20 Hertz is called Ultrasonic waves

    1Thank You

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