Mathematics · JEE

Modulus and argument (or amplitude) of a complex number Revision for JEE

6+ syllabus-aligned questions available

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Revise Modulus and argument (or amplitude) of a complex number by covering every subtopic once, drilling formulas, then solving 6+ timed MCQs with full solutions.

Use this Modulus and argument (or amplitude) of a complex number revision checklist before mocks and the final exam. Reinforce concepts with 6+ syllabus-aligned MCQs on Goodmarks.

Revision checklist

  1. 1.Core idea: Modulus and argument (or amplitude) of a complex number
  2. 2.Relates to other subtopics in Complex Numbers and Quadratic Equations
  3. 3.Argand diagram, modulus, argument
  4. 4.Roots of quadratics, relation with coefficients
  5. 5.Master Modulus and argument (or amplitude) of a complex number definitions and standard results
  6. 6.Solve 20 timed MCQs for Modulus and argument (or amplitude) of a complex number

Free sample questions

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Q1MathsUnit 2: Complex Numbers and Quadratic Equations
For a complex number z, the minimum value of z+z2|z|+|z-2| is
Q2MathsUnit 2: Complex Numbers and Quadratic Equations
In the Argand's plane, the locus of z(z(\neq 1) such that arg{32(2z25z+33z2z2)}=2π3is\arg \left\{\frac{3}{2}\left(\frac{2 z^{2}-5 z+3}{3 z^{2}-z-2}\right)\right\}=\frac{2 \pi}{3} i s
Q3MathsUnit 2: Complex Numbers and Quadratic Equations
If z21=z2+1,\left|\mathbf{z}^{2}-\mathbf{1}\right|=|\mathbf{z}|^{2}+\mathbf{1}, then z\mathbf{z} lies on
Q4MathsUnit 2: Complex Numbers and Quadratic Equations
If z=1i1+i,z=\sqrt{\frac{1-i}{1+i}}, then arg z=z=
Q5MathsUnit 2: Complex Numbers and Quadratic Equations
If z1,z2,εCz_{1}, z_{2}, \varepsilon C are such that z1+z22=\left|z_{1}+z_{2}\right|^{2}= z12+z22\left|z_{1}\right|^{2}+\left|z_{2}\right|^{2} then z1z2\frac{z_{1}}{z_{2}} is
Q6MathsUnit 2: Complex Numbers and Quadratic Equations
Calculate all solutions of z1×z|z-1| \times \mid z- 1=1\mathbf{1} \mid=\mathbf{1}

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Frequently asked questions

How should I revise Modulus and argument (or amplitude) of a complex number before JEE?

Follow the checklist on this page, revise formulas daily, and attempt mixed MCQs every 2–3 days.