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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
Find mirror image of point representing $x + i y$ on real axis:
  • A
    $(x, y)$
  • B
    $(-x, -y)$
  • C
    $(-x, y)$
  • ✓
    $(x, -y)$
✓

Answer

Correct option: D.
$(x, -y)$
Mirror image of point $(x, y)$ on real axis is $(x, -y).$
Since real axis is acting as mirror $x-$coordinate remains same whereas $y-$coordinate gets inverted.
So, $(x, -y)$ is mirror image of $(x, y)$ on real axis.

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