alleryWave energy travels in a direction to the wavefront that is:
AAlong the front
BAt forty five
CTangential to it
DPerpendicular
Answer & Solution
Correct answer: D. Perpendicular
1. The wavefront moves outwards from the source as time passes.
2. Energy is carried in the direction of that motion.
3. That direction is perpendicular to the wavefront.
_Source: syllabus Physics Part II, Chapter 10, Wave Optics._
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