Ultrasonic waves are produced bya)Plezoelectric effectb)Pettiros effectc)Dopplers effectd)Coulombs lawCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

The correct option is A. Ultrasonic waves are sound waves transmitted above the human detectable frequency range usually above 20,000 Hz.  In  most applications ultrasonic waves are generated by a transducer that includes a piezoelectric crystal that convert electrical energy ( electrical current) to mechanical energy (sound waves) .

Answer

Production of Ultrasonic Waves:

Piezoelectric Effect: Ultrasonic waves are produced by the piezoelectric effect. This effect occurs in certain materials, like quartz or ceramics, where an applied mechanical stress leads to the generation of an electric potential. This phenomenon is utilized in ultrasonic transducers, where an alternating voltage applied to the transducer causes it to vibrate at ultrasonic frequencies, producing ultrasonic waves.

By utilizing the piezoelectric effect, ultrasonic waves are generated for various applications such as ultrasonic cleaning, medical imaging (ultrasound), and industrial processes. Understanding the mechanism behind the production of ultrasonic waves is crucial for the efficient use of this technology in diverse fields.

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