Multiple choice general knowledge science & technology

The whistle used to train dog is not audible to human ear.

  1. the above statement is false

  2. because they are infra-sonic whistle specially meant for dogs

  3. because they are ultra-sonic whistle specially made for dog

  4. none of the above.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Dog whistles produce ultrasonic sounds (above 20 kHz) which are beyond the range of human hearing but within dogs' hearing range. Dogs can hear frequencies up to about 45-65 kHz, much higher than humans. Infrasound (below 20 Hz) would not be useful for dog training as dogs also have limited sensitivity there.

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