Question: When an electromagnetic wave is reflected at normal incidence on a perfectly conducting surface, the electric field vector of the reflected wave at the reflecting

When an electromagnetic wave is reflected at normal incidence on a perfectly conducting surface, the electric field vector of the reflected wave at the reflecting surface is the negative of that of the incident wave.

(a) Explain why this should be.

(b) Show that the superposition of incident and reflected waves results in a standing wave.

(c) What is the relationship between the magnetic field vector of the incident and reflected waves at the reflecting surface?

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