Question
Download Solution PDFIf the frequency of a sound is below 20Hz it is known as ______________ sound.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Sound: It is a form of energy produced by vibration or disturbance that propagates in a medium.
- It travels in the form of longitudinal waves (Compression or rarefaction)
Sound waves are of three types:
- Infrasonic waves: The sound waves of frequency between 0 Hz to 20 Hz are called infrasonic waves. The sound produced by thunders, volcanoes, etc. Animals like elephants and whales can hear infrasonic sounds.
- Audible waves: The sound waves of frequency between 20 Hz to 20,000 Hz are called Audible waves. The human ear can able to listen to these frequencies
- Ultrasonic waves: The sound waves of frequency above 20,000 Hz are called Ultrasonic waves. Many animals like bats, cats, dogs, mice, etc.
Last updated on Jul 11, 2025
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