Which consequence results when a waveguide's dimensions restrict transverse EM wave propagation?

💡 Explanation

Evanescent modes appear because, below the cutoff frequency, wave impedance becomes imaginary; therefore, wave propagation ceases exponentially, rather than energy transferring effectively and propagating freely.

• Which outcome affects semiconductor transistor on-current when gate oxide thickness decreases?
• Which imaging error results when a low coherence light source illuminates an object?
• Which risk increases in a phased array antenna due to element mismatch?
• Which consequence arises from the mismatched energies of orbitals?
• Which outcome primarily results when a photomultiplier tube's dynode voltage exceeds its design limit?
• Which outcome occurs when a nuclear power plant control rod undergoes neutron capture during the chain reaction?