Let z be a complex number then z+z is : - Vidyadip

MCQ

Let $z$ be a complex number then $z+\bar{z}$ is :

✓
pure real
B
pure imaginary
C
not decided
D
None of these

✓

Answer

Correct option: A.

pure real

(A)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from PART - 1 CH - 4 Complex Numbers and Quadratic Equations→PART - 1 CH - 4 Complex Numbers and Quadratic Equations — all question types→Maths STD 11 Science question papers→CBSE Board STD 11 Science question papers→CBSE Board question paper generator→

Similar questions

Equation of latus rectum of parabola $x^2+12 y=0$ is :

If a party of $n$ persons sit at a round table, then the odds against two specified individuals sitting next to each other are

The equation $\sin x\cos x = 2$ has

Let $n \in N$ and $[x]$ denote the greatest integer less than or equal to $x$. If the sum of $(n+1)$ terms ${ }^{n} C_{0}, 3 .{ }^{n} C_{1}, 5 .{ }^{n} C_{2}, 7 .{ }^{n} C_{3}, \ldots$ is equal to $2^{100} \cdot 101$, then $2\left[\frac{n-1}{2}\right]$ is equal to $....$

$5 -$ digit numbers are to be formed using $2, 3, 5, 7, 9$ without repeating the digits. If $p$ be the number of such numbers that exceed $20000$ and $q$ be the number of those that lie between $30000$ and $90000$, then $p : q$ is

Let $S$ be the set of all $(\alpha, \beta) \in R \times R$ such that

$\lim _{x \rightarrow \infty} \frac{\sin \left(x^2\right)\left(\log _e x\right)^\alpha \sin \left(\frac{1}{x^2}\right)}{x^{\alpha \beta}\left(\log _e(1+x)^\beta\right.}=0$

Then which of the following is (are) correct?

$(A)$ $(-1,3) \in S$ $(B)$ $(-1,1) \in S$ $(C)$ $(1,-1) \in S$ $(D)$ $(1,-2) \in S$

The least positive integer $n$ such that $1 - \frac{2}{3} - \frac{2}{{{3^2}}} - .... - \frac{2}{{{3^{n - 1}}}} < \frac{1}{{100}},$ is

The maximum distance between points $ (3\sin \theta, 0, 0)$ and $(4\cos \theta, 0, 0)$ is:

If $\sum_{k=1}^{10} \frac{k}{k^{4}+k^{2}+1}=\frac{m}{n}$, where $m$ and $n$ are coprime, then $m+n$ is equal to.

The letters of the word '$MANKIND$' are written in all possible orders and arranged in serial order as in an English dictionary. Then the serial number of the word '$MANKIND$' is $.....$