The amplitude of $0$ is
$0$
$\pi /2$
$\pi $
None of these
The conjugate of complex number $\frac{{2 - 3i}}{{4 - i}},$ is
If complex numbers $(x -2y) + i(3x -y)$ and $(2x -y) + i(x -y + 6)$ are conjugates of each other, then $|x + iy|$ is $(x,y \in R)$
If ${z_1}$ and ${z_2}$ are two non-zero complex numbers such that $|{z_1} + {z_2}| = |{z_1}| + |{z_2}|,$then arg $({z_1}) - $arg $({z_2})$ is equal to
If ${z_1}$ and ${z_2}$ are any two complex numbers then $|{z_1} + {z_2}{|^2}$ $ + |{z_1} - {z_2}{|^2}$ is equal to
If ${z_1}$ and ${z_2}$ are two complex numbers, then $|{z_1} - {z_2}|$ is