1

WB JEE 2021

MCQ (Single Correct Answer)

+2

-0.5

Under isothermal conditions, two soap bubbles of radii a and b coalesce to form a single bubble of radius c. If the external pressure is p, then surface tension of the bubbles is

2

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

A steel and a brass wire, each of length 50 cm and cross-sectional area 0.005 cm

[Young's modulus of steel = 2 $$ \times $$ 10

^{2}hang from a ceiling and are 15 cm apart. Lower ends of the wires are attached to a light horizontal bar. A suitable downward load is applied to the bar, so that each of the wires extends in length by 0.1 cm. At what distance from the steel wire, the load must be applied?[Young's modulus of steel = 2 $$ \times $$ 10

^{12}dyne/cm^{2}and that of brass = 1 $$ \times $$ 10^{12}dyne/cm^{2}]3

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

Which of the following diagrams correctly shows the relation between the terminal velocity v

_{T}of a spherical body falling in a liquid and viscosity $$\eta $$ of the liquid?4

WB JEE 2019

MCQ (Single Correct Answer)

+1

-0.25

A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by 1%. If the Poisson's ratio for the material of the rod be 0.2, which of the following statements is correct?

"The volume approximately ................."

"The volume approximately ................."

Questions Asked from Properties of Matter (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 Circular 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 Binomial Theorem Matrices and Determinants Vector Algebra Three Dimensional Geometry Probability Complex Numbers Statistics

Trigonometry

Coordinate Geometry

Calculus