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Which outcome is observed when applying mechanical stress to gallium-doped germanium?

A)Band gap energy reduction occurs
B)Formation of Cooper pairs increases
C)Magnetic domain alignment strengthens
D)Minority carrier lifetime decreases

💡 Explanation

The band gap narrows under stress due to deformations altering interatomic spacing and energy levels. Since piezoresistivity modifies electronic band structure via deformation potential, therefore band gap energy reduces, rather than causing superconductivity phenomena under normal conditions.

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