The ability of materials to generate electromagnetic waves of a certain frequency when voltage is applied
A characteristic of materials that have an index of refraction which depends on the polarization of the electromagnetic wave passing through it
A characteristic of materials that generate a voltage when stressed and that flex when a voltage is applied✓الإجابة الصحيحة
The ability of materials to generate voltage when an electromagnetic wave of a certain frequency is applied
الشرح
Piezoelectric materials couple mechanical strain and electric field in both directions: squeezing or bending one produces a voltage across it, and applying a voltage makes it flex. The other choices describe radio emission, birefringence, and a photo-response, none of which is the piezoelectric effect.