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← ScienceWhich consequence results when stressed polycarbonate transmits non-uniform polarized light?
A)Photoelastic stress pattern becomes visible✓
B)Material's refractive index homogenization
C)Increased mechanical tensile strength
D)Decreased thermal expansion coefficient
💡 Explanation
Birefringence occurs because applied stress introduces anisotropy at a molecular level, inducing temporary polarization change. Therefore, polarized light waves experience variable refractive indices resulting in visible stress patterns, rather than homogenized refractive index, under intense stress.
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