1
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

The modulus of $${{1 - i} \over {3 + i}} + {{4i} \over 5}$$ is

A
$$\sqrt 5 $$ unit
B
$${{\sqrt {11} } \over 5}$$ unit
C
$${{\sqrt 5 } \over 5}$$ unit
D
$${{\sqrt {12} } \over 5}$$ unit
2
WB JEE 2009
MCQ (Single Correct Answer)
+1
-0.25

For any complex number z, the minimum value of $$|z| + |z - 1|$$ is

A
0
B
1
C
2
D
$$-$$1
3
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

If $$z = {4 \over {1 - i}}$$, then $$\overline z $$ is (where $$\overline z $$ is complex conjugate of z)

A
2(1 + i)
B
(1 + i)
C
$${2 \over {1 - i}}$$
D
$${4 \over {1 + i}}$$
4
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

If $$ - \pi < \arg (z) < - {\pi \over 2}$$, then $$\arg \overline z - \arg ( - \overline z )$$ is

A
$$\pi$$
B
$$-$$ $$\pi$$
C
$${\pi \over 2}$$
D
$$ - {\pi \over 2}$$
WB JEE Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12