Understand Challenge
Understand
The complete Physics of Class 11 and 12, in 94 chapters and 533 lessons. You drag the graphs, predict the motion, build the formulas and answer the checks. Free, with or without an account.
No chapter or lesson has these words.
Unit 01 Mathematical Tools 11 chapters Numbers, Units and Estimation 6 lessons · 86 min Measurement and Error 5 lessons · 75 min Vectors 6 lessons · 92 min Differentiation 6 lessons · 90 min Integration 6 lessons · 91 min Toolbox read when a lesson sends you
Algebra for Physics 6 lessons · 90 min Functions and Graphs 6 lessons · 85 min Trigonometry 6 lessons · 90 min Exponentials and Logarithms 6 lessons · 87 min Sinusoids and Phasors 6 lessons · 91 min Geometry and Shapes for Physics 5 lessons · 74 min
Unit 02 Kinematics 5 chapters Motion in One Dimension 7 lessons · 100 min Graphical Understanding of Motion 6 lessons · 88 min Motion in Two Dimensions 6 lessons · 96 min Relative Velocity in One Dimension 5 lessons · 70 min Relative Velocity in Two Dimensions 5 lessons · 73 min
Unit 03 Dynamics 5 chapters Forces and Newton's Laws 5 lessons · 74 min Objects in Equilibrium 6 lessons · 89 min Accelerated Objects 6 lessons · 88 min Friction, Part 1 5 lessons · 72 min Friction, Part 2 5 lessons · 73 min
Unit 04 Circular Motion 2 chapters Kinematics of Circular Motion 6 lessons · 91 min Dynamics of Circular Motion 6 lessons · 86 min
Unit 05 Work, Energy and Power 3 chapters Work, Kinetic Energy and Power 6 lessons · 91 min Potential Energy and Conservation of Energy 6 lessons · 87 min Motion in a Vertical Circle 5 lessons · 71 min
Unit 06 Centre of Mass and Collisions 3 chapters Centre of Mass 6 lessons · 88 min Momentum and Its Conservation 6 lessons · 90 min Collisions 6 lessons · 90 min
Unit 07 Rotational Mechanics 6 chapters Rigid Bodies and Moment of Inertia 6 lessons · 86 min Torque and Equilibrium 6 lessons · 88 min Dynamics of Rotation 5 lessons · 74 min Angular Momentum 5 lessons · 73 min Rolling Motion 6 lessons · 86 min Dynamics of Rolling 6 lessons · 88 min
Unit 08 Gravitation 2 chapters Gravitational Force and Field 5 lessons · 75 min Gravitational Energy and Orbits 7 lessons · 105 min
Unit 09 Elasticity 2 chapters Stress, Strain and Hooke's Law 5 lessons · 68 min Elastic Energy, Thermal Stress and Real Materials 6 lessons · 83 min
Unit 10 Fluids 5 chapters Pressure in Fluids 6 lessons · 83 min Archimedes' Principle 5 lessons · 69 min Fluid Flow 6 lessons · 82 min Surface Tension 6 lessons · 83 min Viscosity 5 lessons · 69 min
Unit 11 Thermal Physics 1 3 chapters Temperature and Thermal Expansion 6 lessons · 81 min Calorimetry and Change of State 5 lessons · 70 min Kinetic Theory of Gases 6 lessons · 86 min
Unit 12 Thermal Physics 2 4 chapters The First Law and Thermodynamic Processes 6 lessons · 86 min Heat Engines, the Second Law and Entropy 6 lessons · 86 min Conduction of Heat 5 lessons · 69 min Radiation, Convection and Cooling 6 lessons · 82 min
Unit 13 Oscillations 3 chapters Kinematics of SHM 5 lessons · 69 min Dynamics of SHM 7 lessons · 101 min Superposition, Damped and Forced Oscillations 5 lessons · 69 min
Unit 14 Waves 9 chapters Introduction to Waves 5 lessons · 71 min Propagating Waves on a String 5 lessons · 73 min Superposition and Reflection 5 lessons · 69 min Standing Waves on a String 5 lessons · 67 min Propagation of Sound Waves 5 lessons · 73 min Energy, Power, Intensity and Loudness 5 lessons · 68 min Interference and Reflection of Sound 5 lessons · 65 min Standing Sound Waves 5 lessons · 67 min Beats and the Doppler Effect 5 lessons · 72 min
Unit 15 Electromagnetism 1 8 chapters Electric Charge, Coulomb's Law and the Electric Field 6 lessons · 86 min Electric Potential, Energy and the Dipole 6 lessons · 89 min Electric Flux and Gauss's Law 5 lessons · 70 min Conductors in Electrostatics 5 lessons · 71 min Capacitance and Dielectrics 6 lessons · 88 min Electric Current and Resistance 6 lessons · 86 min Circuits: Kirchhoff's Laws, Networks and RC Transients 6 lessons · 87 min Cells, Bridges and Measuring Instruments 6 lessons · 85 min
Unit 16 Electromagnetism 2 8 chapters Magnetic Force on Moving Charges 6 lessons · 82 min Magnetic Force on Currents and the Magnetic Dipole 6 lessons · 82 min Sources of the Magnetic Field 6 lessons · 80 min Magnetism and Matter 5 lessons · 68 min Faraday's Law, Lenz's Law and Motional EMF 6 lessons · 82 min Eddy Currents, Generators and Inductance 6 lessons · 82 min Alternating Current and the LCR Circuit 6 lessons · 85 min Transformers, LC Oscillations and Electromagnetic Waves 6 lessons · 82 min
Unit 17 Optics 7 chapters Reflection: Plane and Spherical Mirrors 6 lessons · 86 min Refraction, Total Internal Reflection and Prisms 6 lessons · 87 min Spherical Surfaces and Lenses 6 lessons · 88 min Optical Instruments and the Eye 5 lessons · 72 min Interference and Young's Double Slit 6 lessons · 86 min Thin Films, Newton's Rings and Other Interference 5 lessons · 71 min Diffraction and Polarisation 5 lessons · 72 min
Unit 18 Modern Physics 8 chapters Photons and the Photoelectric Effect 6 lessons · 84 min Matter Waves and Special Relativity 6 lessons · 82 min The Bohr Atom and Spectra 6 lessons · 85 min X-Rays 5 lessons · 70 min The Nucleus, Binding Energy and Nuclear Reactions 6 lessons · 85 min Radioactivity 6 lessons · 87 min Semiconductors and the p-n Junction 6 lessons · 86 min Diodes, Transistors and Logic Gates 6 lessons · 84 min