a) Explain what is meant by Ultrasonic waves. Mention the properties…
Previous year question for Applied Engineering Physics.
Question
a) Explain what is meant by Ultrasonic waves. Mention the properties of Ultrasonic waves. Describe the production of ultrasonic waves using piezoelectric method. Give a brief description of some methods for the detection of ultrasonic waves. (12)
b) A quartz crystal vibrates at its natural frequency of $30\text{kHz}$. Find its thickness if the density is $2650\text{ kgm}^{-3}$ and the young's modulus is $7.9\times 10^{10}\text{ Nm}^{-2}$. (8)
- Year: 2018
- Subject: Applied Engineering Physics
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