circle the incorrect option audible sound= 20hz, infrasonic sound=more than 20hz frequency and ultrasonic sound = more than 20 hz frequency
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Infrasonic is sound less than 20Hz frequency. Hence the second option is incorrectly.
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Infrasonic is sound less than 20Hz frequency and evaluate based on the second option.
Therefore, the hertz can be measured by taking proper infrasonic range that sounds less and taking proper action for capturing frequency.
The frequency is so high and that is not audible for considering frequency between 20Hz and 20000 HZ.
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