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Which outcome occurs due to dislocations in crystal structures?

A)Reduced mechanical strength Locally
B)Increased electrical conductivity Materially
C)Elevated thermal stability Generally
D)Enhanced optical transmission universally

💡 Explanation

Dislocations cause reduced mechanical strength because these imperfections disrupt the uniform arrangement of atoms, resulting in easier plastic deformation via slip. Therefore, yield strength decreases locally rather than strength increasing, because stability and optical/electrical properties involve grain boundaries.

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