alleryRelative to the direction of propagation, the two fields of an electromagnetic wave are:
APositioned behind it
BPerpendicular to it
CParallel alongside it
DPrecisely against it
Answer & Solution
Correct answer: B. Perpendicular to it
1. A wave with fields along the direction of travel would be longitudinal.
2. Electromagnetic waves are not longitudinal.
3. The fields are perpendicular to each other, and to the direction of propagation.
4. So both fields are perpendicular to the direction of travel.
_Source: syllabus Physics Part I, Ch 8 'Electromagnetic Waves'_
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