1

WB JEE 2020

MCQ (Single Correct Answer)

+2

-0.5

Let z

_{1}and z_{2}be two imaginary roots of z^{2}+ pz + q = 0, where p and q are real. The points z_{1}, z_{2}and origin form an equilateral triangle if2

WB JEE 2020

MCQ (Single Correct Answer)

+2

-0.5

If P(x) = ax

^{2}+ bx + c and Q(x) = $$ - $$ax^{2}+ dx + c, where ac $$ \ne $$ 0 [a, b, c, d are all real], then P(x).Q(x) = 0 has3

WB JEE 2019

MCQ (Single Correct Answer)

+1

-0.25

Let a, b, c be real numbers such that a + b + c < 0 and the quadratic equation ax

^{2}+ bx + c = 0 has imaginary roots. Then,4

WB JEE 2018

MCQ (Single Correct Answer)

+1

-0.25

If $${b_1}{b_2} = 2({c_1} + {c_2})$$ and b

_{1}, b_{2}, c_{1}, c_{2}are all real numbers, then at least one of the equations $${x^2} + {b_1}x + {c_1} = 0$$ and $${x^2} + {b_2}x + {c_2} = 0$$ hasQuestions Asked from Quadratic Equations (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

WB JEE Subjects

Physics

Mechanics

Units & Measurements Vector Algebra Motion Laws of Motion Work Power & Energy Center of Mass Rotational Motion Properties of Matter Heat and Thermodynamics Simple Harmonic Motion Waves Gravitation

Electricity

Electrostatics Current Electricity Capacitor Magnetism Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Modern Physics

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure Redox Reaction Gaseous State Chemical Equilibrium Liquid Solution Ionic Equilibrium Thermodynamics Chemical Kinetics Radioactivity and Nuclear Chemistry Electrochemistry Solid State Surface Chemistry

Inorganic Chemistry

Periodic Table Chemical Bonding Metallurgy Hydrogen and It's Compounds Some s Block Elements Some P Block Elements d and f Block Elements Coordination Compounds

Organic Chemistry

Mathematics

Algebra

Sets and Relations Logarithms Sequence and Series Quadratic Equations Permutations and Combinations Mathematical Induction and Binomial Theorem Matrices and Determinants Vector Algebra Three Dimensional Geometry Probability Complex Numbers Statistics

Trigonometry

Coordinate Geometry

Calculus