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← ScienceWhich consequence arises when stressed polymers depolarize incident light?
A)Photoelastic stress distribution becomes visible✓
B)Increased second harmonic generation occurs
C)Polymer chains completely re-align quickly
D)Sample exhibits laser-induced optical breakdown
💡 Explanation
The change in polarization relates to stress; photoelasticity uses birefringence to visualize stress patterns. Because stress alters the refractive indices along different axes, the polarization changes. Therefore we observe visible fringes, rather than harmonic generation which requires other properties.
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