MCQ Practice Question

The reflection coefficient for electric-field amplitude at normal incidence is defined as?

AReflected electric-field amplitude divided by incident electric-field amplitude
BIncident field divided by reflected field
CTransmitted power divided by incident power only
DReflected magnetic field multiplied by incident field

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Correct Answer: A. Reflected electric-field amplitude divided by incident electric-field amplitude

Explanation: The electric-field reflection coefficient is Γ=Er/Ei at the interface.

Reference: Standard electromagnetic theory: reflection & transmission