why ultrasonic cannot listened by human ear

1.	why ultrasonic cannot listened by human ear
Answer» The human ear has a perceived frequency range of 20 Hertz to 20 kHz.Any frequency below 20 Hz is classified as infrasound and any frequency above 20 kHz is classified as ultrasound. Human middle ear apparatus makes it impossible to hear frequencies classified as ultrasound or infrasound. Animals such as bats on the other hand use echolocation for hunting and can detect frequencies beyond 100 kHz

Answer»

The human ear has a perceived frequency range of 20 Hertz to 20 kHz.Any frequency below 20 Hz is classified as infrasound and any frequency above 20 kHz is classified as ultrasound.

Human middle ear apparatus makes it impossible to hear frequencies classified as ultrasound or infrasound.

Animals such as bats on the other hand use echolocation for hunting and can detect frequencies beyond 100 kHz

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why ultrasonic cannot listened by human ear

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