NCERT Solutions for Class 11 Physics provide chapter-wise answers to all textbook questions. The book is divided into two parts, each containing 7 chapters. Book 1 focuses on topics such as motion and gravitation, while Book 2 covers thermodynamics, kinetic theory, oscillations, and the mechanical properties of solids and fluids.
Shiksha Nation solutions are designed as per the latest 2026 syllabus and exam pattern. Covering all in-text and exercise questions, they simplify difficult topics and make them easier to understand. These solutions also help students revise effectively, develop strong conceptual clarity, and enhance problem-solving skills for both school examinations and competitive entrance exams.
NCERT Solutions for Class 11 Physics Chapter wise 2026 27
Physics Part - 1
| S.No. | Chapter Name & Topic |
| 1 | Chapter 1 - Units and Measurements |
| 2 | Chapter 2 - Motion in a Straight Line |
| 3 | Chapter 3 - Motion in a Plane |
| 4 | Chapter 4 - Laws of Motion |
| 5 | Chapter 5 - Work, Energy, and Power |
| 6 | Chapter 6 - System of Particles and Rotational Motion |
| 7 | Chapter 7 - Gravitation |
Physics Part - 2
| 8 | Chapter 8 - Mechanical Properties of Solids |
| 9 | Chapter 9 - Mechanical Properties of Fluids |
| 10 | Chapter 10 - Thermal Properties of Matter |
| 11 | Chapter 11 - Thermodynamics |
| 12 | Chapter 12 - Kinetic Theory |
| 13 | Chapter 13 - Oscillations |
| 14 | Chapter 14 - Waves |
Chapter-wise NCERT Solutions for Class 11 Physics Overview
Chapter 1 - Units and Measurements
The first chapter discusses physical quantities, units, and the International System of Units (SI). Students learn about the measurement of length, mass, and time. The chapter also covers dimensions of physical quantities, dimensional formulas, dimensional equations, and dimensional analysis, and its applications in checking the dimensional consistency of equations, converting units, and deducing relations among physical quantities.
Chapter 2 - Motion in a Straight Line
Chapter 2 talks about the basic concepts of kinematics through the study of motion along a straight line (rectilinear motion). Students learn how to describe the position of an object using a reference frame and understand the concepts of path length and displacement.
The chapter explains average and instantaneous speed, velocity, and acceleration, and distinguishes between uniform and non-uniform motion. It also covers graphical representation of motion through position-time and velocity-time graphs, equations of motion for uniformly accelerated motion, and the concept of relative velocity.
Chapter 3 - Motion in a Plane
This chapter further discusses the study of motion to two dimensions and introduces the use of vectors to describe physical quantities such as displacement, velocity and acceleration. Students learn about scalars and vectors, position and displacement vectors, vector addition and subtraction, resolution of vectors, and multiplication of vectors by real numbers. The chapter explains motion in a plane with constant acceleration, projectile motion, and uniform circular motion.
Chapter 4 - Laws of Motion
This chapter explains the relationship between force and motion through Newton’s Laws of Motion. Students learn about Aristotle’s fallacy, the law of inertia, and Newton’s first, second and third laws of motion. The chapter introduces momentum and the principle of conservation of momentum, and its applications.
It also covers the equilibrium of a particle, common forces in mechanics such as weight, normal reaction, tension, and friction, and discusses static, kinetic, and rolling friction. Students study the dynamics of uniform circular motion and the role of centripetal force in maintaining circular motion.
Chapter 5 - Work, Energy and Power
Chapter 5 explains the concepts of work, energy, and power and their role in describing motion. Students learn how work is done by constant and variable forces, the work-energy theorem, and the concepts of kinetic and potential energy.
The chapter discusses conservative and non-conservative forces, conservation of mechanical energy, and the law of conservation of energy. It also covers the potential energy of springs, different forms of energy, the measurement of power, and collisions, including elastic and inelastic collisions.
Chapter 6 - System of Particles and Rotational Motion
This chapter discusses mechanics from individual particles to systems of particles and rigid bodies. Students learn about the centre of mass, its motion and the linear momentum of a system of particles. The chapter introduces rotational motion and important concepts such as angular velocity, angular acceleration, torque, angular momentum, and their relationships.
It also covers the equilibrium of rigid bodies, centre of gravity, moment of inertia, radius of gyration, and the parallel and perpendicular axis theorems. Students study the kinematics and dynamics of rotational motion about a fixed axis, conservation of angular momentum and rolling motion.
Chapter 7 - Gravitation
This chapter explains the universal force of gravitation that exists between all objects in the universe. Students learn about Kepler’s laws of planetary motion, Newton’s Universal Law of Gravitation, and the gravitational constant. The chapter discusses acceleration due to gravity and its variation with height and depth, gravitational potential energy, escape speed, and the motion of satellites around the Earth. Students also study orbital velocity and the energy of orbiting satellites.
Chapter 8 - Mechanical Properties of Solids
Chapter 8 teaches the behaviour of solid materials under external forces and their ability to resist deformation. Students learn about elasticity and plasticity, stress and strain, and the relationship between them through Hooke’s Law.
The chapter introduces elastic moduli such as Young’s modulus, shear modulus, and bulk modulus, which quantify the elastic properties of materials. It also covers the stress-strain curve, elastic potential energy and Poisson’s ratio. These concepts help students understand how solids react to stretching, compression, bending and other forces.
Chapter 9 - Mechanical Properties of Fluids
This chapter helps in understanding the behaviour of liquids and gases, collectively known as fluids. Students learn about fluid pressure, pressure variation with depth, atmospheric pressure, gauge pressure, and Pascal’s Law with its applications in hydraulic machines.
The chapter introduces streamline and turbulent flow, Bernoulli’s Principle, Torricelli’s theorem, and dynamic lift. It also covers viscosity, Stokes’ Law, terminal velocity, surface tension, surface energy, angle of contact, drops and bubbles and capillary rise.
Chapter 10 - Thermal Properties of Matter
This chapter discusses the effects of heat on matter and the various ways in which thermal energy is transferred. Students learn about temperature, heat, and thermal equilibrium, and the measurement of temperature using different scales. The chapter explains thermal expansion in solids, liquids, and gases, including linear, superficial and volume expansion.
It also covers specific heat capacity, calorimetry, change of state, latent heat, and the laws governing heat transfer through conduction, convection and radiation. Students study Newton’s law of cooling and the thermal properties of materials.
Chapter 11 - Thermodynamics
This chapter explains the principles related to heat, work, and energy in macroscopic systems. Students learn about thermodynamic systems and their surroundings, thermal equilibrium, state variables, equations of state, and thermodynamic processes such as isothermal, adiabatic, isobaric and isochoric processes.
The chapter teaches the concepts of heat, work, and internal energy and explains the First Law of Thermodynamics as a statement of energy conservation. Students also study the Second Law of Thermodynamics, heat engines, refrigerators, reversible and irreversible processes and the efficiency of thermal machines.
Chapter 12 - Kinetic Theory
Chapter 12 explains the microscopic behaviour of gases by relating their macroscopic properties to the motion of molecules. Students learn about the molecular nature of matter, the kinetic theory of gases and the assumptions of the ideal gas model.
The chapter derives the relation between pressure and the molecular motion of gases and explains important concepts such as temperature, root mean square (rms) speed, degrees of freedom and the law of equipartition of energy. Students also study the specific heat capacities of gases and gain an understanding of how the behaviour of a gas can be explained in terms of the random motion of its constituent molecules.
Chapter 13 - Oscillations
This chapter discusses oscillatory motion, a type of periodic motion in which a body moves back and forth about a stable equilibrium position. Students learn about periodic and oscillatory motions, simple harmonic motion and the quantities used to describe it, such as amplitude, period, frequency, phase and angular frequency.
The chapter explains SHM through restoring forces and derives the equations for displacement, velocity and acceleration. It also discusses the relation between SHM and uniform circular motion, energy in SHM, oscillations of a spring-block system and the simple pendulum.
Chapter 14 - Waves
The last chapter helps in understanding the production, propagation, and properties of waves. Students learn about wave motion as a means of transferring energy without the transfer of matter. The chapter explains different types of waves, including transverse and longitudinal waves and introduces important wave parameters such as amplitude, wavelength, frequency, time period and wave speed.
Students study the displacement relation for a progressive wave, the principle of superposition, reflection of waves and standing waves. The chapter also covers sound waves, their propagation through different media, characteristics of sound and phenomena such as beats and the Doppler effect.
