1
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The equation |z – i| = |z – 1|, i = $$\sqrt { - 1} $$, represents :
A
a circle of radius 1
B
the line through the origin with slope – 1
C
a circle of radius $${1 \over 2}$$
D
the line through the origin with slope 1
2
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If z and w are two complex numbers such that |zw| = 1 and arg(z) – arg(w) = $${\pi \over 2}$$ , then :
A
$$z\overline w = {{1 - i} \over {\sqrt 2 }}$$
B
$$\overline z w = i$$
C
$$z\overline w = {{ - 1 + i} \over {\sqrt 2 }}$$
D
$$\overline z w = -i$$
3
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If a > 0 and z = $${{{{\left( {1 + i} \right)}^2}} \over {a - i}}$$, has magnitude $$\sqrt {{2 \over 5}} $$, then $$\overline z $$ is equal to :
A
$$ - {1 \over 5} + {3 \over 5}i$$
B
$$ - {1 \over 5} - {3 \over 5}i$$
C
$${1 \over 5} - {3 \over 5}i$$
D
$$ - {3 \over 5} - {1 \over 5}i$$
4
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Let z $$ \in $$ C be such that |z| < 1.

If $$\omega = {{5 + 3z} \over {5(1 - z)}}$$z, then :
A
4Im( $$\omega$$) > 5
B
5Im( $$\omega$$) < 1
C
5Re( $$\omega$$) > 4
D
5Re( $$\omega$$) > 1
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