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The Phenomenon where electric charge develops due to application of pressure is __________

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The Phenomenon where electric charge develops due to application of pressure is __________

(a) Pyro-electric minerals

(b) Piezo-electric minerals

(c) Paramagnetic minerals

(d) Diamagnetic minerals

The question was asked during an internship interview.

My doubt is from Physical Properties topic in portion The Study of Minerals of Engineering Geology

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Right choice is (b) Piezo-electric minerals

To explain: In some minerals, an electric charge is developed by applying pressure. This group is termed as piezo-electric. Examples: Tourmaline and quartz.

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