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Model Paper 3 — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsModel Paper 31 Mark
MCQ
Let $x, y \in R$, then $x + iy$ is a non real complex number if
  • A
    $y=0$
  • B
    $x \neq 0$
  • C
    $x=0$
  • D
    $y \neq 0$
✓

Answer

(d) $y \neq 0$
Explanation: If a complex number has to be a non real complex number then its imaginary part should not be zero $\Rightarrow i y \neq 0 \Rightarrow y \neq 0$

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