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Complex Numbers and Quadratic Equations — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsComplex Numbers and Quadratic Equations1 Mark
MCQ
Which axis is known as imaginary axis in argand plane?
  • A
    $x -$ axis
  • ✓
    $y -$ axis
  • C
    $z -$ axis
  • D
    any axis
✓

Answer

Correct option: B.
$y -$ axis
The plane having a complex number assigned to each of its point is called the
complex plane or the Argand plane.
When $(x + y i)$ is plotted in argand plane, $y -$ axis is imaginary axis.

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