1

WB JEE 2021

MCQ (Single Correct Answer)

+1

-0.25

A body of density 1.2 $$\times$$ 10

^{3}kg/m^{3}is dropped from rest from a height 1 m into a liquid to density 2.4 $$\times$$ 10^{3}kg/m^{3}. Neglecting all dissipative effects, the maximum depth to which the body sinks before returning to float on the surface is2

WB JEE 2021

MCQ (Single Correct Answer)

+1

-0.25

Two solid spheres S

_{1}and S_{2}of same uniform density fall from rest under gravity in a viscous medium and after sometime, reach terminal velocities v_{1}and v_{2}, respectively. If ratio of masses $${{{m_1}} \over {{m_2}}} = 8$$, then $${{{v_1}} \over {{v_2}}}$$ will be equal to3

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

4

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}]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
Work Power & Energy
Center of Mass
Rotational Motion
Properties of Matter
Heat and Thermodynamics
Simple Harmonic Motion
Waves
Gravitation

Electricity

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

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

Trigonometry

Coordinate Geometry

Calculus