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Electrical Engineering

When electromagnetic waves strike the boundary of denser medium they are __________. A. Reflected, in phase B. Reflected out of phase by 180° C. reflected, they are completely absorbed

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When electromagnetic waves strike the boundary of denser medium they  are __________.
A. Reflected, in phase  
B. Reflected out of phase by 180°
C. reflected, they are completely absorbed
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B. Reflected out of phase by 180°
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