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← ScienceWhich phenomenon causes destructive interference in corrugated waveguides?
A)Bragg diffraction produces band gaps✓
B)Capacitive coupling resonates harmonically
C)Inductive reactance matches impedance ideally
D)Dielectric absorption minimizes reflections
💡 Explanation
Destructive interference results from Bragg diffraction at periodic structures, as it produces band gaps preventing wave propagation because specific wavelengths are reflected rather than transmitted. Therefore, the waveguide attenuates certain frequencies, rather than enhancing with reactance.
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