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Class 11 Physics notes

Written by Dr. Hamza Farooq (Physics)

Chapter notes with key points, definitions, short questions and model answers. Each chapter links to practice questions.

Chapter notes

Measurements

Physical quantities and the SI system, prefixes, dimensions and dimensional analysis, significant figures, precision and accuracy, and uncertainty in measurements. Chapter notes

Vectors and equilibrium

Scalars and vectors, addition by the head to tail rule, resolution into components, unit vectors, dot and cross products, torque, and the first and second conditions of equilibrium with couples. Chapter notes

Motion and force

Displacement, velocity and acceleration, equations of uniformly accelerated motion, free fall, projectile motion, Newton's laws, momentum and impulse, conservation of momentum, collisions, and friction. Chapter notes

Work and energy

Work as a dot product, kinetic and potential energy, the work energy theorem, conservative forces, conservation of energy, power, efficiency, and sources of energy. Chapter notes

Circular motion

Angular displacement, angular velocity and acceleration, centripetal force, moment of inertia, rotational kinetic energy, angular momentum, Newton's law of gravitation, satellites, orbital and escape speed. Chapter notes

Fluid dynamics

Fluid pressure, flow line and turbulent flow, the equation of continuity, Bernoulli's equation and its applications, Torricelli's theorem, viscosity, Stokes' law, terminal velocity and drag. Chapter notes

Oscillations

Periodic and simple harmonic motion, displacement, velocity and acceleration in SHM, the spring mass system, the simple pendulum, energy in SHM, damped and forced oscillations, and resonance. Chapter notes

Waves

Wave motion and its types, the wave equation v = fλ, speed of sound, superposition and interference, stationary waves on strings and in pipes, beats, and the Doppler effect. Chapter notes

Physical optics

Wave nature of light, Huygens' principle, interference, Young's double slit experiment, thin films, diffraction by a single slit and a grating, and polarization with Malus' law and Brewster's law. Chapter notes

Optical instruments

Refraction and Snell's law, total internal reflection and optical fibres, lens formula and power, the human eye and its defects, the simple and compound microscope, and the astronomical telescope. Chapter notes

Heat and thermodynamics

Temperature and heat, specific heat and latent heat, thermal expansion, the ideal gas equation and kinetic theory, the first law of thermodynamics, thermodynamic processes, heat engines, the second law and entropy.

Class 11 Physics practice questions