Answer / suhana_t

The frequency used in Rodents Repllant System is
above 20KHz i.e Ultra Sonic Frequency..

Infrasonic:-The Frequencies bellow 20 Hz.

Ultrasonic Frquencies:-The Frequencies Above 20 KHz.

Audio Frquencies:-The Frequencies ranges btw 20 Hz to 20
KHz.

State nyquist stability criterion.

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