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Question
Obtain the relation between phase difference and path difference.
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Solution
- Phase difference (Φ):
It is the difference expressed in degrees or radians between two waves having same frequency and referenced to same point in time. - Path difference (δ):
It is the difference between the lengths of two paths of the two different having same frequency and travelling at same velocity.
δ = `lambda/(2pi) Φ`
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`[sin 45^circ = cos 45^circ = 1/sqrt 2]`
