1
JEE Main 2022 (Online) 25th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Let a circle C in complex plane pass through the points $${z_1} = 3 + 4i$$, $${z_2} = 4 + 3i$$ and $${z_3} = 5i$$. If $$z( \ne {z_1})$$ is a point on C such that the line through z and z1 is perpendicular to the line through z2 and z3, then $$arg(z)$$ is equal to :

A
$${\tan ^{ - 1}}\left( {{2 \over {\sqrt 5 }}} \right) - \pi $$
B
$${\tan ^{ - 1}}\left( {{{24} \over 7}} \right) - \pi $$
C
$${\tan ^{ - 1}}\left( 3 \right) - \pi $$
D
$${\tan ^{ - 1}}\left( {{3 \over 4}} \right) - \pi $$
2
JEE Main 2022 (Online) 24th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Let $$A = \{ z \in C:1 \le |z - (1 + i)| \le 2\} $$

and $$B = \{ z \in A:|z - (1 - i)| = 1\} $$. Then, B :

A
is an empty set
B
contains exactly two elements
C
contains exactly three elements
D
is an infinite set
3
JEE Main 2021 (Online) 31st August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
If z is a complex number such that $${{z - i} \over {z - 1}}$$ is purely imaginary, then the minimum value of | z $$-$$ (3 + 3i) | is :
A
$$2\sqrt 2 - 1$$
B
$$3\sqrt 2 $$
C
$$6\sqrt 2 $$
D
$$2\sqrt 2 $$
4
JEE Main 2021 (Online) 27th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
If $$S = \left\{ {z \in C:{{z - i} \over {z + 2i}} \in R} \right\}$$, then :
A
S contains exactly two elements
B
S contains only one element
C
S is a circle in the complex plane
D
S is a straight line in the complex plane
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