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Questions  

The relation between phase difference (Δφ) and path difference (Δx) is 

a
Δφ=2πλΔx
b
Δφ=2πλΔx
c
Δφ=2πλΔx
d
Δφ=2Δxλ

detailed solution

Correct option is A

Phase difference = 2πλx Path difference

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