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PHYSICS-XI

(Theory) Time : 3 Hours One Paper Max. Marks : 70

No. of Periods Marks

Unit -I Physical World and Measurement

Chapter-1: Physical World10

Chapter-2: Units and Measurements

Unit-II Kinematics

23Chapter-3: Motion in a Straight Line 24

Chapter-4: Motion in a Plane

Unit-III Laws of Motion14

Chapter-5: Laws of Motion

Unit-IV Work, Energy and Power12

Chapter-6: Work, Energy and Power

Unit-V Motion of System of Particles and Rigid Body18 17

Chapter-7: System of Particles and Rotational Motion

Unit-VI Gravitation12

Chapter-8: Gravitation

Unit-VII Properties of Bulk Matter

Chapter-9: Mechanical Properties of Solids

Chapter-10: Mechanical Properties of Fluids24

Chapter-11: Thermal Properties of Matter

Unit-VIII Thermodynamics12

20

Chapter-12: Thermodynamics

Unit-IX Behaviour of Perfect Gases and Kinetic Theory of

Gases08

Chapter-13: Kinetic Theory

Unit-X Oscillations and Waves

Chapter-14: Oscillations 26 10

Chapter-15: Waves

Total 160 70

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Physics Syllabus XI.pmd 9/14/2015, 12:35 PM1

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Unit I : PHYSICAL WORLD AND MEASUREMENT (PERIODS 10)

Chapter-1 : Physical World

Physics-scope and excitement; nature of physical laws; Physics, technology and

society.

Chapter-2 : Units and Measurements

Need for measurement; Units of measurement; systems of units; SI units, fundamental

and derived units. Length, mass and time measurements; accuracy and precision of

measuring instruments; errors in measurement; significant figures.

Dimensions of physical quantities, dimensional analysis and its applications.

UNIT II : KINEMATICS (PERIODS 24)

Chapter-3 : Motion in a Straight Line

Frame of reference, Motion in a straight line: Position-time graph, speed and velocity.

Elementary concepts of differentiation and integration for describing motion, uniform

and non-uniform motion, average speed and instantaneous velocity, uniformly

accelerated motion, velocity-time and position-time graphs.

Relation for uniformly accelerated motion (graphical treatment).

Chapter-4 : Motion in a Plane

Scalar and vector quantities; position and displacement vectors, general vectors and

their notations; equality of vectors, multiplication of vectors by a real number;

addition and subtraction of vectors, relative velocity, Unit vector; resolution of a

vector in a plane, rectangular components, Scalar and Vector product of vectors.

Motion in a plane, cases of uniform velocity and uniform acceleration-projectile

motion, uniform circular motion.

UNIT III : LAWS OF MOTION (PERIODS 14)

Chapter-5 : Laws of Motion

Intuitive concept of force, Inertia, Newton’s first law of motion; momentum and

Newton’s second law of motion; impulse; Newton’s third law of motion.

Law of conservation of linear momentum and its applications.

Equilibrium of concurrent forces, Static and kinetic friction, laws of friction, rolling

friction, lubrication.

Dynamics of uniform circular motion: Centripetal force, examples of circular motion

(vehicle on a level circular road, vehicle on a banked road).

UNIT IV : WORK, ENERGY AND POWER (PERIODS 12)

Chapter-6 : Work, Energy and Power

Work done by a constant force and a variable force; kinetic energy, work-energy

theorem, power.

Notion of potential energy, potential energy of a spring, conservative forces:

conservation of mechanical energy (kinetic and potential energies); non-conservative

forces: motion in a vertical circle; elastic and inelastic collisions in one and two

dimensions.

Physics Syllabus XI.pmd 8/20/2016, 5:38 AM2

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UNIT V : MOTION OF SYSTEM OF PARTICLES AND RIGID BODY (PERIODS 18)

Chapter-7 : System of Particles and Rotational Motion

Centre of mass of a two-particle system, momentum conservation and centre of mass

motion.

Centre of mass of a rigid body; centre of mass of uniform rod.

Moment of a force, torque, angular momentum, laws of conservation of angular

momentum and its applications.

Equilibrium of rigid bodies, rigid body rotation and equations of rotational motion,

comparison of linear and rotational motions.

Moment of inertia, radius of gyration, values of moments of inertia for simple

geometrical objects (no derivation). Statement of parallel and perpendicular axes

theorems and their applications.

UNIT VI : GRAVITATION (PERIODS 12)

Chapter-8 : Gravitation

Keplar’s laws of planetary motion, universal law of gravitation.

Acceleration due to gravity and its variation with altitude and depth.

Gravitational potential energy and gravitational potential, escape velocity, orbital

velocity of a satellite, Geo-stationary satellites.

UNIT VII : PROPERTIES OF BULK MATTER (PERIODS 24)

Chapter-9 : Mechanical Properties of Solids

Elastic behaviour, Stress-strain relationship, Hooke’s law, Young’s modulus, bulk

modulus, shear modulus of rigidity, Poisson’s ratio; elastic energy.

Chapter-10 : Mechanical Properties of Fluids

Pressure due to a fluid column; Pascal’s law and its applications (hydraulic lift and

hydraulic brakes), effect of gravity on fluid pressure.

Viscosity, Stokes’ law, terminal velocity, streamline and turbulent flow, critical

velocity, Bernoulli’s theorem and its applications.

Surface energy and surface tension, angle of contact, excess of pressure across a curved

surface, application of surface tension ideas to drops, bubbles and capillary rise.

Chapter-11 : Thermal Properties of Matter

Heat, temperature, thermal expansion; thermal expansion of solids, liquids and gases,

anomalous expansion of water; specific heat capacity; Cp, Cv-calorimetry; change of

state–latent heat capacity.

Heat transfer-conduction, convection and radiation, thermal conductivity, qualitative

ideas of Blackbody radiation, Wein’s displacement Law, Stefan’s Law, Green house

effect.

UNIT VIII : THERMODYNAMICS (PERIODS 12)

Chapter-12 : Thermodynamics

Thermal equilibrium and definition of temperature (zeroth law of thermodynamics),

heat, work and internal energy. First law of thermodynamics, isothermal and adiabatic

processes.

Physics Syllabus XI.pmd 8/20/2016, 6:17 AM3

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Second law of thermodynamics: reversible and irreversible processes, Heat engine

and refrigerator.

UNIT IX : BEHAVIOUR OF PERFECT GASES AND KINETIC THEORY OF GASES

(PERIODS 08)

Chapter-13 : Kinetic Theory

Equation of state of a perfect gas, work done in compressing a gas.

Kinetic theory of gases–assumptions, concept of pressure. Kinetic interpretation of

temperature; rms speed of gas molecules, degrees of freedom, law of equi-partition

of energy (statement only) and application to specific heat capacities of gases; concept

of mean free path, Avogadro’s number.

UNIT X : OSCILLATIONS AND WAVES (PERIODS 26)

Chapter-14 : Oscillations

Periodic motion–time period, frequency, displacement as a function of time, periodic

functions.

Simple harmonic motion (S.H.M) and its equation; phase; oscillations of a loaded

spring-restoring force and force constant; energy in S.H.M. Kinetic and potential

energies; simple pendulum derivation of expression for its time period.

Free, forced and damped oscillations (qualitative ideas only), resonance.

Chapter-15 : Waves

Wave motion: Transverse and longitudinal waves, speed of wave motion,

displacement relation for a progressive wave, principle of superposition of waves,

reflection of waves, standing waves in strings and organ pipes, fundamental mode

and harmonics, Beats, Doppler effect.

Physics Syllabus XI.pmd 8/20/2016, 5:38 AM4

CONTENTS

� Sample Question Paper - I (Solved) S-1–S-15� Sample Question Paper - II (Solved) S-16–S-32

Chapterwise Important Examination StyleQuestions (Solved) 1–250

1. Physical World and Measurement 1–18

2A. Description of Motion in One Dimension 19–32

2B. Description of Motion in Two and Three Dimensions 33–50

3. Laws of Motion 51–72

4. Work, Energy and Power 73–92

5. Motion of System of Particles and Rigid Body 93–116

6. Gravitation 117–132

7A. Mechanics of Solids and Fluids 133–165

7B. Thermal Properties of Matter 166–175

8. Thermodynamics 176–192

9. Behaviour of Perfect Gas and Kinetic Theory 193–203

10A. Oscillations 204–220

10B. Waves 221–244

� Value Based Questions 245–250

Model Question Papers for Practice M-1–M-16

Model Question Paper-1 M-1–M-2

Model Question Paper-2 M-3–M-4

Model Question Paper-3 M-5–M-6

Model Question Paper-4 M-7–M-8

Model Question Paper-5 M-9–M-10

Model Question Paper-6 M-11–M-12

Model Question Paper-7 M-13–M-14

Model Question Paper-8 M-15–M-16

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Contents Physics-XI.pmd 9/14/2015, 12:34 PM1

SAMPLE QUESTION PAPER–I (SOLVED)

PHYSICS (Theory)CLASS–XI (C.B.S.E.)

Time : 3 hours Maximum Marks : 70

General Instructions :(i) All questions are compulsory.

(ii) Question numbers 1 to 5 are very short answer questions carrying 1 mark each.(iii) Question numbers 6 to 10 are short answer questions carrying 2 marks each.(iv) Question numbers 11 to 22 are also short answer questions carrying 3 marks each.(v) Question number 23 is a value based question carrying 4 marks.

(vi) Question numbers 24 to 26 are long answer questions carrying 5 marks each.(vii) Use log tables if necessary. Use of calculators is not permitted.

Q.1. Name the quantity whose SI unit is Wm–1 K–1

Ans. It is coefficient of thermal conductivity.Q.2. Under what condition, the scalar product of two vectors is zero ?Ans. Scalar product of two vectors is zero if they are perpendicular to each other.Q.3. Name the physical quantity which is expressed as force times velcoity. Is it

a scalar or a vector quantity?

Ans. F . v→ →

is power. It is a sclar quantity.Q.4. What is parking orbit?Ans. The orbit of a satellite which is co-centric and co-planner with equitorial plane

of earth is called a parking orbit.Q.5. Why is a wrench with a large arm preferred ?

Ans. Turning effect of force i.e. torque τ = ×�� �

r F or τ = rF sin θtherefore larger the r, larger is the torque or the turning effect.Q.6. A projectile at any angle θθθθθ with horizontal has kinetic energy E. Find its kinetic

energy at the highest point.

Ans. K.E. of projectile, = 21E

2mv , where v is the velocity of projectile inclined at an

angle θ with horizontal when it is projecte.At highest poit, horizontal component is v cos θ.

∴ K.E. at highest poit = θ 21( cos )

2m v =

⎛ ⎞ θ⎜ ⎟⎝ ⎠2 21

cos2

mv = E cos2 θ.

Q.7. What is force ? Give its dimension and unit.Ans. Force is the pull or push which changes or tends to change the state of rest or

of uniform motion of a body or changes its direction.Since F = ma, its dimensions are [M1L1T–2] and absolute units as newton (N) and dyne

(dyn). Its gravitational units are g wt (or g f) and kg wt (or kg f).

S-1

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MBD Sample Paper Physics 11 CBSE

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