Question

Ultrasonics produced in quartz is due to

• A. magneto striction effect
• B. pyroelectric effect
• C. piezoelectric effect
• D. none of these

Answer 1

The correct option is C piezoelectric effect

Quartz crystal is having the property of piezoelectricity, In piezoelectric materials, if one apply a stress these materials produce electricity due to change in polarization, and such materials produces stress if these materials kept under electric fields. If this field varies with time such materials can be used as mechanical wave generators. Option "C" is correct.