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A disturbance in a region between two ideal parts of a crystal is known as ________

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A disturbance in a region between two ideal parts of a crystal is known as ________

(a) Boundary defect

(b) Point defect

(c) Line defect

(d) Volume defect

The question was posed to me by my school principal while I was bunking the class.

Asked question is from Crystal Defects in portion Imperfection in Metal Crystals, Fracture, Corrosion and Oxidation of Engineering Material & Metallurgy

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Correct answer is (c) Line defect

To elaborate: Line defect is regarded as a disturbed region between two perfect parts of a crystal. They may be of either edge dislocation type or screw dislocation.

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