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Practice Online Test Series for JEE Main 2018 & NEET 2018

Perimeter of the locus represented by arg `(z+i)/(z-i)=pi/4` (where `i=sqrt(-1))` is equal to-

A.

`(3pi)/2`

B.

`(3pi)/sqrt2`

C.

`(pi)/sqrt2`

D.

None of these