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The relation between path length (/\l) a...

The relation between path length `(/_\l)` and phase difference`(/_\phi)` is given by

A

`/_\phi=((2pi)/lambda)/_\l`

B

`/_\phi=(lambda/(2pi))/_\l`

C

`/_\phi=(2pilambda)/_\l`

D

`/_\phi=(1/(2pilambda))/_\l`

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