Electrostatics
Current Electricity
Magnetic Effects of Current and Magnetism
Electromagnetic Induction and Alternating Currents
Dual Nature of Matter and Radiation
Physical World and Measurement
Kinematics
Vectors
Laws of Motion
Work, Energy and Power
Motion of System of Particles and Rigid Body
Gravitation
Properties of Bulk Matter
Thermodynamics
Behaviour of Perfect Gas and Kinetic Theory
Oscillations and Waves
Electromagnetic Waves
Optics
Atoms and Nuclei
Electronic Devices & Semiconductor
Communication System
Uncategorized

Hydrocarbons
Uncategorized
Some Basic Concepts of Chemistry
Structure of Atom
Classification of Elements and Periodicity in Properties
Chemical Bonding and Molecular Structure
States of Matter: Gases and Liquids
Equilibrium
Redox Reactions
Hydrogen
s-Block Element (Alkali and Alkaline earth metals)
Some p-Block Elements
Organic Chemistry- Some Basic Principles and Techniques
Environmental Chemistry
Solid State
Solutions
Thermodynamics
Electrochemistry
Chemical Kinetics
Surface Chemistry
General Principles and Processes of Isolation of Elements
p-Block Elements
d and f Block Elements
Coordination Compounds
Haloalkanes and Haloarenes
Alcohols, Phenols and Ethers
Aldehydes, Ketones and Carboxylic Acids
Organic Compounds Containing Nitrogen
Amines
Biomolecules
Polymers
Chemistry in Everyday Life
Nuclear Chemistry

Sets, Relations and Functions
Mathematical Reasoning
Statistics and Probability
Vectors and Three-Dimensional Geometry
Linear Programming
Matrices and Determinants
Uncategorized
Permutations and Combinations
Coordinate Geometry (Old)
Logarithm, Indices, Surds and Partial Fraction
Trigonometry
Principle of Mathematical Induction
Complex Numbers and Quadratic Equations
Linear Inequalities
Binomial Theorem
Sequence and Series
Conic Sections
Differential Calculus
Limits, Continuity and Differentiability
Integral Calculus
Differential Equations
Straight Lines
Coordinate Geometry

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 1. Two identical metal plates are given positive charges {tex} Q _ { 1 } {/tex} and {tex} Q _ { 2 } \left( < Q _ { 1 } \right) {/tex} respectively. If they are now brought close together to form a parallel plate capacitor with capacitance {tex} C , {/tex} the potential difference between them is

{tex} \left( Q _ { 1 } + Q _ { 2 } \right) / ( 2 C ) {/tex}

{tex} \left( Q _ { 1 } + Q _ { 2 } \right) / C {/tex}

{tex} \left( Q _ { 1 } - Q _ { 2 } \right) / C {/tex}

{tex} \left( Q _ { 1 } - { Q } _ { 2 } \right) / ( 2 C ) {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 2. Three positive charges of equal value {tex} q {/tex} are placed at the vertices of an equilateral triangle. The resulting lines of force should be sketched as in

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 3. Consider the situation shown in the figure. The capacitor {tex} A {/tex} has a charge {tex} q {/tex} on it whereas {tex} B {/tex} is uncharged. The charge appearing on the capacitor {tex} B {/tex} a long time after the switch is closed is

zero

{tex} q / 2 {/tex}

{tex} q {/tex}

{tex} 2 q {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 4. In the arrangement of capacitors shown in figure, each capacitor is of {tex} 9 \mu F , {/tex} Then the equivalent capacitance between in points {tex} A {/tex} and {tex} B {/tex} is

{tex} 9 \mu \mathrm F {/tex}

{tex} 18 \mu \mathrm F {/tex}

{tex} 4.5 \mu \mathrm F {/tex}

{tex} 15\mu \mathrm F {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 5. In the electric field of a point charge {tex} q {/tex}, a certain point charges is carried from point {tex} A {/tex} to {tex} B , C , D {/tex} and {tex} E {/tex} as shown in figue The work done is

Least along the path {tex} A E {/tex}

Least along the path {tex} A C {/tex}

Zero along any one of the paths

Least along {tex} A B {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 6. Each capacitor shown in figure is {tex} 2 \mu \mathrm { F } . {/tex} Then the equivalent capacitance between points {tex} A {/tex} and {tex} B {/tex} is

{tex} 2 \mu \mathrm { F } {/tex}

{tex} 4\mu \mathrm F {/tex}

{tex} 6 \mu \mathrm F {/tex}

{tex} 8 \mu \mathrm { F } {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 7. Some equipotential surfaces are shown in Fig. The magnitude and direction of the electric field is

{tex} 100 \mathrm { Vm } ^ { - 1 } {/tex} making angle {tex} 120 ^ { \circ } {/tex} with the {tex} x {/tex} -axis

{tex} 200 \mathrm { Vm } ^ { - 1 } {/tex} making angle {tex} 60 ^ { \circ } {/tex} with the {tex} x {/tex} -axis

{tex} 200 \mathrm { Vm } ^ { - 1 } {/tex} making angle {tex} 120 ^ { \circ } {/tex} with the {tex} x {/tex} -axis

None of the above

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 8. Charges {tex} 2 q , - q {/tex} and {tex} - q {/tex} lie at the vertices of a triangle. The value of {tex} E {/tex} and {tex} V {/tex} at the centroid of equilateral triangle will be

{tex} \mathrm { E } \neq 0 {/tex} and {tex} \mathrm { V } \neq 0 {/tex}

{tex} \mathrm { E } = 0 {/tex} and {tex} \mathrm { V } = 0 {/tex}

{tex} \mathrm { E } \neq 0 {/tex} and {tex} \mathrm { V } = 0 {/tex}

{tex} \mathrm { E } = 0 {/tex} and {tex} \mathrm { V } \neq 0 {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 9. For the circuit shown in figure the charge on {tex} 4 \mu \mathrm { F } {/tex} capacitor is

{tex} 40 \mu C {/tex}

{tex} 30 \mu C {/tex}

{tex} 24 \mu C {/tex}

{tex} 54 \mu C {/tex}

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 10. Five balls numbered {tex} 1,2,3,4,5 {/tex} are suspended using separate threads. The balls {tex} ( 1,2 ) , ( 2,4 ) {/tex} and {tex} ( 4,1 ) {/tex} show electrostatic attraction, while balls {tex} ( 2,3 ) {/tex} and {tex} ( 4,5 ) {/tex} show repulsion. Therefore, ball {tex}1{/tex} must be

Negatively charged

Positively charged

Neutral

Made of metal

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 11. A dielectric in the form of a sphere is introduced into a homogeneous electric field. {tex} A , B {/tex} and {tex} C {/tex} are three points as shown in fig

Then,

Intensity at {tex} A {/tex} increases while that at {tex} B {/tex} and {tex} C {/tex} decreases

Intensity at {tex} A {/tex} and {tex} B {/tex} decreases, whereas intensity at {tex} C {/tex} increases

Intensity at {tex} A {/tex} and {tex} C {/tex} increases and that {tex} B {/tex} decreases

Intensity at {tex} A , B {/tex} and {tex} C {/tex} decreases

**Correct Marks**
4

**Incorrectly Marks**
-1

Q 12. If the flux of the electric field through a closed surface is zero, then

The electric field must be zero everywhere on the surface

The total charge inside the surface must be zero

The electric field must be uniform throughout the closed surface

The charge outside the surface must be zero

Your request has been placed successfully.