Solid State Question 228
Question: Certain crystals produce electric signals on application of pressure. This phenomenon is called
[BHU 2005]
Options:
A) Pyroelectricity
B) Ferroelectricity
C) Peizoelectricity
D) Ferrielectricity
Show Answer
Answer:
Correct Answer: C
Solution:
When polar crystal is subjected to a mechanical stress, electricity is produced - a case of piezoelectricity. Reversely, if electric field is applied, mechanical stress is developed. Piezoelectric crystal acts as a mechanical electrical transductor.
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