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

Ferroelectricity

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Ferrielectricity

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Pyroelectricity

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Piezoelectricity

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Solution

The correct option is D Piezoelectricity
When a polar crystal is subjected to a mechanical stress, electricity is produced a case of piezoelectricity. Reversely, if an electric field is applied, then a mechanical stress is developed. Piezoelectric crystal acts as a mechanical-electrical transductor.

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