Let z be a complex number such that $\left| \frac { z - 2 i } { z + i } \right| = 2 , z \neq - i$. Then $z$ lies on the circle of radius 2 and centre (1) $( 2,0 )$ (2) $( 0,2 )$ (3) $( 0,0 )$ (4) $( 0 , - 2 )$
Let z be a complex number such that $\left| \frac { z - 2 i } { z + i } \right| = 2 , z \neq - i$. Then $z$ lies on the circle of radius 2 and centre\\
(1) $( 2,0 )$\\
(2) $( 0,2 )$\\
(3) $( 0,0 )$\\
(4) $( 0 , - 2 )$