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← ScienceWhich consequence results when excessive mechanical stress narrows energy band?
A)Increased electrical resistance✓
B)Enhanced thermal conductivity
C)Improved optical transparency
D)Reduced piezoelectric effect
💡 Explanation
Increased mechanical stress narrows energy band disrupting electron delocalization and increasing electron scattering; therefore resistance increases because reduced mobility is induced, rather than enhanced conduction which requires wider bands.
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