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A complex number z is said to be unimo...

A complex number z is said to be unimodular if `|z|=1` Suppose `z_(1)andz_(2)` are complex number such that `(z_(1)-^(2z)2)/(2-z_(1)z_2)` is unimodular and `z_(2)` is not unimodular .Then the point `z_(1)` lies on a -

A

circle of radius 2

B

circle pf radius `sqrt(2)`

C

stright line parallel to x - axis

D

straight line parallel to y - aixs

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The correct Answer is:
A
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