Ultrasonic waves are produced by making use of
[amp_mcq option1=”ferromagnetic material” option2=”ferrimagnetic material” option3=”piezoelectric material” option4=”pyroelectric material” correct=”option3″]
This question was previously asked in
UPSC CDS-2 – 2017
Ultrasonic waves are commonly produced by utilizing the piezoelectric effect, typically in materials like quartz crystals or certain ceramics.
Piezoelectric materials convert electrical energy into mechanical vibrations and vice versa. By applying a high-frequency alternating voltage across a piezoelectric crystal, it vibrates at that frequency, generating ultrasonic waves.