Electromagnetic waves are refracted when they

1.	Electromagnetic waves are refracted when they
A.	Pass into a medium of different dielectric constant
B.	Are polarized at right angles to the direction of propagation
C.	Encounter a perfectly conducting surface
D.	Pass through a small slot in a conducting plane
Answer» B. Are polarized at right angles to the direction of propagation

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Electromagnetic waves are refracted when they

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