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Question
The range of frequency of subsonic vibrations is less than ______ hertz.
The range of frequency of subsonic vibrations is less than ______ hertz.
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Solution
The correct option is A twenty
The range of frequency of subsonic vibration is less than 20 Hz. They cannot be perceived by the human ear. They are also referred to as infrasonic vibrations.
The range of frequency of subsonic vibration is less than 20 Hz. They cannot be perceived by the human ear. They are also referred to as infrasonic vibrations.
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