A bird produces an ultrasonic wave of wavelength 3.41 mm. Find its frequency if the velocity of the sound in air is 341 m/s.

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wavelength = 3.41 mm = 0.00341 meters.
frequency = velocity / wavelength = 341 m/sec / 0.00341 m
= 10^5 Hertz = 100 kHz
It is ultra sonic, as it is more than 20 kHz. Humans cannot hear.
sir. kindly ryt ur answ now..

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2015-04-02T19:26:28+05:30

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given  wavelength = 3.41 mm = 0.00341 meters.

  frequency = velocity / wavelength = 341 m/sec / 0.00341 m
                  = 10^5 Hertz = 100 kHz

   It is ultra sonic, as it is more than 20 kHz. Humans cannot hear
.  Perhaps it is a "bat" bird, that is producing this ultrasonic frequency.

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