Q61.Let n denote the number of solutions of the equation z2 + 3z = 0, where z is a complex number. Then the value of โโk=0 nk1 is equal to (1) 1 (2) 34 (3) 32 (4) 2
What This Question Tests
This question tests the ability to solve a simple quadratic equation in complex numbers and then calculate the sum of an infinite geometric progression.
Concepts Tested
Formulas Used
z^2 + 3z = 0
Sum of infinite G.P. = a / (1-r)
๐ NCERT Sections This Tests
5.12 โ Write All The Geometrical Isomers Of [Pt(Nh3)(Br)(Cl)(Py)] And How Many Of
Chemistry Class 11 ยท Chapter 5
5.12 Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?
5.28 โ How Many Ions Are Produced From The Complex Co(Nh3)6Cl2 In Solution?
Chemistry Class 11 ยท Chapter 5
5.28 How many ions are produced from the complex Co(NH3)6Cl2 in solution? (i) 6 (ii) 4 (iii) 3 (iv) 2 139 Coordination Compounds Reprint 2025-26
5.11 โ Draw All The Isomers (Geometrical And Optical) Of:
Chemistry Class 11 ยท Chapter 5
5.11 Draw all the isomers (geometrical and optical) of: (i) [CoCl2(en)2] + (ii) [Co(NH3)Cl(en)2] 2+ (iii) [Co(NH3)2Cl2(en)]+
๐ Question Details
- Chapter
- Complex Numbers
- Topic
- Solutions of complex equations, Geometric Progression
- Year
- 2021
- Shift
- 22 Jul Shift 1
- Q Number
- Q61
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 5: Complex Numbers and Quadratic Equations
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