Physics,11th,Hindi Medium

Description

C H A P T E R 1
UNITS AND MEASUREMENTS
1.1 Introduction 1
1.2 The international system of units 1
1.3 Significant figures 3
1.4 Dimensions of physical quantities 7
1.5 Dimensional formulae and dimensional equations 7
1.6 Dimensional analysis and its applications 7
C H A P T E R 2
MOTION IN A STRAIGHT LINE
2.1 Introduction 13
2.2 Instantaneous velocity and speed 14
2.3 Acceleration 15
2.4 Kinematic equations for uniformly accelerated motion 17
C H A P T E R 3
MOTION IN A PLANE
3.1 Introduction 27
3.2 Scalars and vectors 27
3.3 Multiplication of vectors by real numbers 29
3.4 Addition and subtraction of vectors – graphical method 29
3.5 Resolution of vectors 31
3.6 Vector addition – analytical method 33
3.7 Motion in a plane 34
3.8 Motion in a plane with const

Projectile motion 38
3.10 Uniform circular motion 40
C H A P T E R 4
LAWS OF MOTION
4.1 Introduction 49
4.2 Aristotle’s fallacy 50
4.3 The law of inertia 50
4.4 Newton’s first law of motion 51
4.5 Newton’s second law of motion 53
4.6 Newton’s third law of motion

Conservation of momentum 57
4.8 Equilibrium of a particle 58
4.9 Common forces in mechanics 59
4.10 Circular motion 63
4.11 Solving problems in mechanics 64
C H A P T E R 5
WORK, ENERGY AND POWER
5.1 Introduction 71
5.2 Notions of work and kinetic energy : The work-energy theorem 73
5.3 Work 73
5.4 Kinetic energy 74
5.5 Work done by a variable force 75
5.6 The work-energy theorem for a variable force 76
5.7 The concept of potential energy 77
5.8 The conservation of mechanical energy 78
5.9 The potential energy of a spring 80
5.10 Power 83
5.11 Collisions 83
C H A P T E R 6
SYSTEM OF PARTICLES AND ROTATIONAL MOTION
6.1 Introduction 92
6.2 Centre of mass 95
6.3 Motion of centre of mass 99
6.4 Linear momentum of a system of particles 100
6.5 Vector product of two vectors 101
6.6 Angular velocity and its relation with linear velocity 103
6.7 Torque and angular momentum 105
6.8 Equilibrium of a rigid body

Moment of inertia 114
6.10 Kinematics of rotational motion about a fixed axis 116
6.11 Dynamics of rotational motion about a fixed axis 118
6.12 Angular momentum in case of rotations about a fixed axis 120
C H A P T E R 7
GRAVITATION
7.1 Introduction 127
7.2 Kepler’s laws 128
7.3 Universal law of gravitation 129
7.4 The gravitational constant 131
7.5 Acceleration due to gravity of the earth 132
7.6 Acceleration due to gravity below and above the surface of earth

Gravitational potential energy 134
7.8 Escape speed 135
7.9 Earth satellites 137
7.10 Energy of an orbiting satellite

C h a p t e r 8
Mechanical Properties of Solids
8.1 Introduction 167
8.2 Stress and strain 168
8.3 Hooke’s law 169
8.4 Stress-strain curve 169
8.5 Elastic moduli 170
8.6 Applications of elastic behaviour of materials 174
C h a p t e r 9
Mechanical Properties of Fluids
9.1 Introduction 180
9.2 Pressure 180
9.3 Streamline flow 186
9.4 Bernoulli’s principle 187
9.5 Viscosity 190
9.6 Surface tension 192
C h a p t e r 10
Thermal Properties of Matter
10.1 Introduction 202
10.2 Temperature and heat 202
10.3 Measurement of temperature 203
10.4 Ideal-gas equation and absolute temperature 203
10.5 Thermal expansion 204
10.6 Specific heat capacity 208
10.7 Calorimetry 209
10.8 Change of state 210
10.9 Heat transfer 214
10.10 Newton’s law of cooling

C h a p t e r 11
Thermodynamics
11.1 Introduction 226
11.2 Thermal equilibrium 227
11.3 Zeroth law of thermodynamics 228
11.4 Heat, internal energy and work 229
11.5 First law of thermodynamics 230
11.6 Specific heat capacity

Thermodynamic state variables and equation of state 232
11.8 Thermodynamic processes 233
11.9 Second law of thermodynamics 236
11.10 Reversible and irreversible processes 236
11.11 Carnot engine 237
C h a p t e r 12
Kinetic Theory
12.1 Introduction 244
12.2 Molecular nature of matter 244
12.3 Behaviour of gases 246
12.4 Kinetic theory of an ideal gas 248
12.5 Law of equipartition of energy 252
12.6 Specific heat capacity 253
12.7 Mean free path 254
C h a p t e r 13
Oscillations
13.1 Introduction 259
13.2 Periodic and oscilatory motions 260
13.3 Simple harmonic motion 262
13.4 Simple harmonic motion and uniform circular motion 264
13.5 Velocity and acceleration in simple harmonic motion 266
13.6 Force law for simple harmonic motion 267
13.7 Energy in simple harmonic motion 268
13.8 The Simple Pendulum

Waves
14.1 Introduction 278
14.2 Transverse and longitudinal waves 280
14.3 Displacement relation in a progressive wave 281
14.4 The speed of a travelling wave 284
14.5 The principle of superposition of waves 287
14.6 Reflection of waves 288
14.7 Beats