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  1. Asked: In:

    Fill in the blank: Shrillness of a sound is determined by the …………….. of vibration.

    Sarthak Atwal

    Shrillness of a sound is determined by the frequency of vibration. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

    Shrillness of a sound is determined by the frequency of vibration.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

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  2. Asked: In:

    Fill in the blank: Unwanted sound is called ……………………. .

    Sarthak Atwal

    Unwanted sound is called noise. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

    Unwanted sound is called noise.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

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  3. Asked: In:

    Fill in the blank: The unit of frequency is …………………….. .

    Sarthak Atwal

    The unit of frequency is hertz (Hz). https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

    The unit of frequency is hertz (Hz).

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

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  4. Asked: In:

    Loudness is determined by the ……………………. of vibration.

    Sarthak Atwal

    Loudness is determined by the amplitude of vibration. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

    Loudness is determined by the amplitude of vibration.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

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  6. Asked: In:

    Time taken by an object to complete one oscillation is called ………………. .

    Sarthak Atwal

    Time taken by an object to complete one oscillation is called time period. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

    Time taken by an object to complete one oscillation is called time period.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-13/

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