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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 imaginary axis:
  • A
    $(x, y)$
  • B
    $(-x, -y)$
  • ✓
    $(-x, y)$
  • D
    $(x, -y)$
✓

Answer

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

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