Class 11 Physics
Physics helps students understand how matter, energy, motion and forces shape the natural world. Students build concepts through topics such as kinematics, laws of motion, gravitation, properties of matter, thermodynamics, waves, electricity, magnetism, optics and modern physics, with attention to units, graphs, formulas and numerical reasoning. The subject pages organise learning into chapters and topics, while focused MCQs support practice and recall. Each question includes the correct answer and a clear explanation, helping students identify mistakes, strengthen problem-solving skills and revise important ideas efficiently.
1Physical World
भौतिक जगत
In this Class 11 Physics chapter, students are introduced to the scope, nature, and purpose of physics as a study of the physical world. They explore how observation, experimentation, measurement, and mathematical reasoning help explain natural phenomena. The chapter also presents the relationship between physics, technology, and society, along with an overview of fundamental forces, scientific laws, and the broad areas in which physics is applied.
3 topics · 0 questionsUnits and Measurements
इकाइयाँ एवं मापन
This Class 11 Physics chapter introduces the language and methods used to describe physical quantities accurately. Students learn SI base and derived units, unit conversion, dimensions and dimensional analysis, significant figures, scientific notation, and the treatment of measurement errors and uncertainties. The chapter also develops practical skills for reporting results with appropriate precision and checking whether physical equations are dimensionally consistent.
5 topics · 0 questionsMotion in a Straight Line
सरल रेखा में गति
This Class 11 Physics chapter introduces the description of motion along a straight line. Students learn to distinguish position, distance, and displacement, and understand speed, velocity, and acceleration as physical quantities. Using tables, motion diagrams, and position–time and velocity–time graphs, they interpret uniform and non-uniform motion. The chapter also develops the equations of motion for constant acceleration and applies them to everyday one-dimensional motion problems, strengthening graphical reasoning, measurement skills, and the use of units and signs.
6 topics · 0 questionsMotion in a Plane
समतल में गति
This Class 11 Physics chapter develops the tools needed to describe motion in two dimensions. Students learn how to represent displacement, velocity and acceleration using vectors, resolve vectors into components, and analyse motion along a plane. The chapter explains projectile motion, including the path, time of flight, maximum height and range of a projectile, and introduces uniform circular motion through angular velocity, centripetal acceleration and related forces.
5 topics · 0 questionsLaws of Motion
गति के नियम
This Class 11 Physics chapter develops a clear understanding of how forces influence the motion of objects. Students study inertia and Newton’s three laws of motion, learn to draw and interpret free-body diagrams, and apply the ideas of force, mass, acceleration, momentum, and impulse to physical situations. The chapter also introduces friction, equilibrium, and the analysis of connected bodies, helping learners solve numerical and conceptual problems systematically.
8 topics · 0 questionsWork, Energy and Power
कार्य, ऊर्जा और शक्ति
In this Class 11 Physics chapter, students explore how forces transfer energy through work and how energy changes from one form to another. They learn to calculate work done by constant and variable forces, understand the work–energy theorem, and distinguish kinetic and potential energy. The chapter develops the principle of conservation of mechanical energy and introduces power as the rate of doing work, with applications to everyday motion and machines.
7 topics · 0 questionsSystem of Particles and Rotational Motion
कणों का निकाय तथा घूर्णी गति
This Class 11 Physics chapter explains how systems of particles move and how their motion can be analysed as a whole. Students learn about the centre of mass, its motion, linear momentum, conservation of momentum, and collisions. The chapter then develops the ideas of torque, angular momentum, moment of inertia, radius of gyration, and the parallel- and perpendicular-axis theorems. It also introduces rotational equilibrium and the rolling motion of rigid bodies.
9 topics · 0 questionsGravitation
गुरुत्वाकर्षण
This Class 11 Physics chapter develops the idea of gravitation as a universal force between masses. Students study Newton’s law of gravitation, the gravitational field and acceleration due to gravity, and how g varies with height, depth and Earth’s rotation. The chapter also distinguishes mass from weight and explains gravitational potential energy, escape velocity, orbital motion, satellites and Kepler’s laws, helping learners connect mathematical relations with the motion of planets and artificial satellites.
6 topics · 0 questionsMechanical Properties of Solids
ठोसों के यांत्रिक गुणधर्म
In this Class 11 Physics chapter, students explore how solid materials respond to external forces. They learn the ideas of stress and strain, elasticity, plasticity, and the elastic limit, and examine Hooke’s law through the relationship between stress and strain. The chapter introduces Young’s modulus, bulk modulus, and shear modulus to describe the deformation of different solids, helping students connect mathematical relations with the strength and practical behaviour of materials.
7 topics · 0 questionsMechanical Properties of Fluids
द्रवों के यांत्रिक गुणधर्म
In this Class 11 Physics chapter, students explore how liquids and gases behave under force and motion. They learn about pressure, its variation with depth, Pascal’s law, atmospheric pressure, buoyancy, and Archimedes’ principle. The chapter also introduces fluid flow, the equation of continuity, Bernoulli’s theorem, viscosity, Stokes’ law, terminal velocity, and surface tension, helping students connect these concepts with everyday phenomena and practical applications.
6 topics · 0 questionsThermal Properties of Matter
पदार्थ के ऊष्मीय गुणधर्म
This Class 11 Physics chapter introduces how matter responds to changes in temperature and heat. Students learn the distinction between heat and temperature, thermal equilibrium, temperature scales, and the expansion of solids, liquids, and gases. The chapter develops concepts such as specific heat capacity, calorimetry, latent heat, and changes of state, and explains heat transfer through conduction, convection, and radiation. It also connects these ideas with everyday thermal phenomena and the laws used to describe cooling and equilibrium.
6 topics · 0 questionsThermodynamics
ऊष्मागतिकी
This Class 11 Physics chapter introduces thermodynamics as the study of heat, work, temperature, and energy in physical systems. Students learn to describe a system using state variables, distinguish thermal equilibrium from energy transfer, and apply the zeroth, first, and second laws of thermodynamics. The chapter explains internal energy, heat capacity, work done in common thermodynamic processes, and the operation and efficiency of heat engines, helping students connect microscopic ideas with observable changes.
7 topics · 0 questionsKinetic Theory
गैसों का गतिज सिद्धांत
This Class 11 Physics chapter explains the microscopic basis of the behavior of gases through the kinetic theory. Students study how the random motion and collisions of gas molecules produce pressure, and how temperature relates to their average kinetic energy. The chapter covers the ideal gas equation, molecular speeds, degrees of freedom, the law of equipartition of energy, specific heat capacities, and the concept of mean free path, helping connect observable gas laws with particle-level motion.
6 topics · 0 questionsOscillations
दोलन
This Class 11 Physics chapter introduces oscillatory and periodic motion, focusing on simple harmonic motion (SHM). Students learn how displacement, velocity, acceleration, phase, amplitude, frequency, angular frequency, and time period describe an oscillator. The chapter develops SHM equations and graphs, explains the exchange of kinetic and potential energy, and applies these ideas to spring-mass systems and simple pendulums. It also connects mathematical models with everyday examples of repeated motion.
6 topics · 0 questionsWaves
तरंगें
This Class 11 Physics chapter develops a clear understanding of how waves transfer energy and information without transporting matter as a whole. Students study periodic and progressive waves, transverse and longitudinal motion, wavelength, frequency, phase, amplitude, and wave speed. They apply the wave equation and explore superposition, reflection, standing waves, harmonics, beats, and the behaviour of sound in air columns, connecting mathematical descriptions with familiar physical phenomena.
8 topics · 0 questions