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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
$1 + 0 i$ is, $...........$ for complex number $z.$
  • A
    additive inverse
  • B
    additive identity element
  • ✓
    multiplicative identity element
  • D
    multiplicative inverse
✓

Answer

Correct option: C.
multiplicative identity element
On multiplying one $( 1 + 0 i )$ to a complex number, we get same complex number so $1 + 0i$ is multiplicative identity element for complex number $z.$
i.e. $z \times 1 = z.$

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