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← ScienceWhich consequence develops when tensile stress deforms crystal lattice?
A)Increased dislocation density and material fatigue✓
B)Increased electron mobility and conductivity
C)Increased phonon frequency and thermal dissipation
D)Increased magnetic domain sizes and coercivity
💡 Explanation
Increased dislocation density leads to material fatigue because work hardening occurs due to lattice imperfections from applied tensile stress involving work. Therefore, fatigue increases rather than increased conductivity because electronic band-gaps shift under uniform compression, a different mechanical load.
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