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Question

Certain crystals produce electric signals on application of pressure. This phenomenon is called

[BHU 2005]


A

Pyroelectricity

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B

Ferroelectricity

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C

Peizoelectricity

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D

Ferrielectricity

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Solution

The correct option is C

Peizoelectricity


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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