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Question
The sound waves with a frequency greater than 20 KHz are known as:
The sound waves with a frequency greater than 20 KHz are known as:
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Solution
The correct option is A Ultrasound
The sound waves with a frequency greater than 20 KHz are known as ultrasound (or ultrasonic). Ultrasound can travel freely in solids and liquids, but in gases, its intensity falls. In a medium, it travels with the same speed with which the audible sound travels.
Ultrasound
The sound waves with a frequency greater than 20 KHz are known as ultrasound (or ultrasonic). Ultrasound can travel freely in solids and liquids, but in gases, its intensity falls. In a medium, it travels with the same speed with which the audible sound travels.
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