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9th Class General Knowledge Science and Technology Question Bank Science and Technology

  • question_answer
    Vibration that travel through the air or another medium and can be heard when they reach a person's or animal's ear is called sound. The loudness of sound is determined by what property of sound?

    A)  Frequency

    B)  Velocity

    C)  Amplitude

    D)  Wavelength

    Correct Answer: C

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