What are Ultrasonic Sounds?

Sounds having frequency greater than 20000 Hz are called Ultrasonic Sounds

Can Ultrasonic Sounds be heard by animals

Yes, some animals can hear ultrasonic sounds like dogs, cats, bats etc

Example

• Some dog trainers use special kinds of whistles due to their high frequency for their dogs
• These whistles can be heard only by dogs but these cannot be heard by human beings
  
  

What is Use of Ultrasounds

• It is used for medical diagnostic (medical lab tests)
• It is used to check depth of ocean
• It is used in treatment of muscle pain and arthritis