Physics

To detect the obstacles in their path, bats produce:

  1. Infrasonic waves
  2. Ultrasonic waves
  3. Electromagnetic waves
  4. Radio waves.

Sound

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Answer

Ultrasonic waves

Reason — Bats can produce and detect the sound waves of very high frequency up to about 100 kHz. The audible sound range is from 20 Hz to 20 kHz. Any frequency above 20 kHz is called ultrasonic waves. Hence, we can say that bats produce ultrasonic waves.

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