How ultrasonic waves are different from electromagnetic waves?
Answers
Electromagnetic waves are not mechanical/acoustic/sonic waves. They are transverse in nature and do not need a medium to travel across. Ultrasonic waves are different from normal sound(longitudinal) waves in terms of frequency. They are still mechanical but have higher frequencies than audible spectrum(20Hz-20kHz).
Answer:
- The ultrasonic wave is a sound wave with frequency greater than 20 k Hz whereas electromagnetic wave is formed when electric and magnetic fields come in touch.
Explanation:
The differences between ultrasonic wave and electromagnetic wave are discussed below:
(1) Ultrasonic wave requires a medium to travel. The medium can be solid, liquid or gas. For each medium the speed will change.
But electromagnetic wave does not require any medium to travel. It can travel with the speed of light without any medium.
(2) Ultrasonic wave does not carry any energy while traveling.
But in case of electromagnetic wave it can absorb or emit energy during changing state.
(3) Ultrasonic wave is basically a sound wave. So it has only the wave property.
But electromagnetic wave has dual property - wave property and particle property.