How is a wave front different from a ray?
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hey mate..
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A ray is a line extending outward from the source and representing the direction of propagation of the wave at any point along it. Rays are perpendicular to wave fronts.
A wave front is a line representing all parts of a wave that are in phase.
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hope it helps
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ray is always parallel but in waves the they can be parallel they can't be parallel
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