Tag: ultrasound and its applications

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Multiple choice physics study of sound conditions for hearing echo echo ultrasound and its applications

The technique used by bats to find their way or to locate food is _______.

  1. SONAR

  2. RADAR

  3. Echolocation

  4. Flapping
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bats can produce ultrasonic waves by flapping their wings. They can also detect these waves.these waves produced by the bats after reflection from the obstacles like building guide them to  remain away from the obstacles during night with the help of ultrasonic waves.

Multiple choice physics study of sound conditions for hearing echo echo ultrasound and its applications

It has been seen that the behaviour of animals becomes unusual just before the tremor is felt.what is the reason behind this?

  1. Because animals are able to detect infrasonic waves produced at the time of tremor.

  2. Because animals are able to detect ultrasonic waves produced at the time of tremor.

  3. Because animals are able to detect audible waves produced at the time of tremor.

  4. All
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Has been seen that the behaviour of animals becomes unusual just before the tremor is felt.This is because animals are able to detect infrasonic waves produced at the time of tremor. Infrasonic waves are waves of frequency less than 20Hz.