Mechanics
Bank ~30–35 /100 Phys (~full Mechanics share)
~32% of Physics tags (2020–2026)
PhysicsCommon notes
One page per chapter
Physics · common notes
Independent Mechanics, Fluids & Waves, Thermal, Electromagnetism, and Optics & Modern pages built for JEE Advanced — 60–90s templates deepened with assumption gates, network maps, and unit discipline. Each topic below is its own page — methods with impact copy, processed sample questions, and reusable question families.
Study path: open a topic page (not only the portion hub). Read official syllabus + trends (why it matters) → scan mixed joins → method impact → sample → question family. Formulas come last. Aim 60–90 seconds per stem.
How to use
Common practice principle
- 01Principle 1
Advanced Physics is currently lengthiest when Mechanics and Electrodynamics join constraints, fields and circuits. Train cross-topic chains, not isolated formula recall.
- 02Principle 2
Mechanics is FBD-plus-constraint; Fluids & Waves is assumptions-plus-boundary; Thermal is path-plus-state; EM is field-law-plus-circuit; Optics & Modern is sign/path/quantum equation. Keep styles separate, then practise deliberate joins.
- 03Principle 3
First 15 seconds name every chapter the stem touches and the ask; the next 20–60 seconds only execute known templates. Write one-line reasons for every MC/MATCH statement.
- 04Principle 4
Open chapter topic pages for full methods, samples, and families — this hub is the routing layer.
Portion overview pages
Hubs (protocol + links)
Fluids & Waves
Bank ~10–14 /100 Phys (~full Fluids+Waves share)
~12% of Physics tags (fluids ~2% + waves/SHM-sound ~10%, 2020–2026)
Thermal Physics
Bank ~10–14 /100 Phys (~full Thermal share)
~12% of Physics tags (2020–2026)
Electromagnetism
Bank ~22–28 /100 Phys (~full EM share)
~24% of Physics tags (electro ~11% + current ~3% + mag/EMI/AC ~10%, 2020–2026)
Optics & Modern Physics
Bank ~18–22 /100 Phys (~full Optics+Modern share)
~20% of Physics tags (optics ~13% + modern ~7%, 2020–2026)
Primary study surface
Physics topic notes (complete)
Independent Mechanics, Fluids & Waves, Thermal, Electromagnetism, and Optics & Modern pages with syllabus mapping, Advanced paper patterns, fast methods, processed samples, and question families for JEE Advanced 2027.
Mechanics · open a topic page
Units, Errors & Experiments
Units & Experiments · independent page
Classify as dimensions, significant figures, percentage error or a named experiment in 15 seconds; then one propagation rule or least-count protocol finishes the stem.
Kinematics & Projectiles
Kinematics · independent page
Fix an inertial Cartesian frame and constant-acceleration vs circular vs relative mode in 15 seconds; component equations then finish most stems inside 90 seconds.
Newton’s Laws & Friction
Newton & Friction · independent page
Draw every force, choose inertial vs accelerating-frame strategy, and write ΣF=ma (or pseudo-force) before friction limits; the algebra then stays short.
Work, Energy & Power
Work & Energy · independent page
Choose work–energy vs conservation of mechanical energy vs momentum in 15 seconds; one energy ledger then yields speed or work without integrating every force component by hand.
Centre of Mass & Collisions
COM & Collisions · independent page
Track COM under external force, then switch to impulse–momentum and restitution along the line of impact; most collision stems close without full trajectory integration.
Rigid Body Rotation
Rotation · independent page
Pick translation+rotation about COM (or fixed-axis) in 15 seconds, write τ=Iα and energy/angular momentum as needed; rolling without slipping is one constraint v=ωr that closes the system — expect joins with collisions and friction audits.
SHM & Oscillations
SHM · independent page
Reduce the motion to ẍ + ω²x = 0 (or θ̈ + ω²θ = 0) in 15–35 seconds; everything else—T, v_max, energy, phase—follows from that ω.
Gravitation
Gravitation · independent page
Work with U and V (potential) rather than force magnitude alone; energy and Kepler’s law then decide orbital and escape stems in one ledger.
Fluids & Waves · open a topic page
Fluid Mechanics
Fluids · independent page
Classify hydrostatic vs flow in 15 seconds; one free-body or streamline equation plus a consistency check finishes most stems under 90 seconds.
Properties of Matter
Matter props · independent page
Tag the stem as surface/capillary, viscous drag, or Hookean elasticity in 15 seconds; one energy or force relation plus a unit check closes it.
Waves & Sound
Waves · independent page
Name wave type and boundary conditions first; then superposition, harmonic formula or Doppler shift finishes the stem without formula thrash.
Thermal · open a topic page
Thermal Properties of Matter
Thermal props · independent page
Separate expansion, heat balance and conduction in 15 seconds; one conservation or Fourier statement plus unit discipline finishes the stem.
Kinetic Theory of Gases
KTG · independent page
Lock degrees of freedom and process type (isothermal vs adiabatic) early; then RMS/pressure relations and C_P−C_V=R finish most numericals.
Thermodynamics
Thermo · independent page
Fix the sign convention and process type in 15 seconds; First-law ledger plus Carnot bound controls almost every Advanced thermo stem, including multi-process cycles.
Heat Transfer & Radiation
Radiation · independent page
Treat radiation as power laws in T and e/a; Kirchhoff links e and a, Stefan gives net power, Wien shifts the spectrum—audit T⁴ and kelvin every time.
Electromagnetism · open a topic page
Electrostatics: Field & Potential
Field & Potential · independent page
Separate field (vector, force) from potential (scalar, energy), then use superposition and ΔV = −∫E·dl instead of memorising isolated formulas.
Gauss’s Law
Gauss’s Law · independent page
Name the symmetry, build a Gaussian surface where E is constant or zero on faces, then Φ = Q_enc/ε₀ gives E without integrating Coulomb pairwise.
Capacitance & Dielectrics
Capacitance · independent page
Lock battery-connected vs isolated (Q or V fixed), then rebuild C with dielectric, and compute U from the conserved quantity.
Current Electricity
Current Electricity · independent page
Assign loop currents with consistent direction, include every internal r, then apply ΣV=0 and ΣI=0 — heating and power follow from the solved currents.
Magnetic Effects of Current
Magnetism · independent page
Pick Biot–Savart (local source) or Ampere (symmetry), get B, then apply F=q v×B or F=I ℓ×B; meter problems are shunt/series multiplier arithmetic.
Electromagnetic Induction
EMI · independent page
Write Φ_B, apply ε = −dΦ/dt with Lenz direction first, then treat RL/RC/LC DC switching as first-order (or LC oscillatory) circuits — including motional-emf power joins.
AC Circuits & EM Waves
AC & EM Waves · independent page
Reduce series LCR to Z and φ with phasors, then read I₀, V drops and power; EM waves need c=1/√(μ₀ε₀), E–B link and spectrum order radio→γ.
Optics & Modern · open a topic page
Ray Optics
Ray Optics · independent page
State one Cartesian sign convention on the figure, apply mirror/lens formula once per surface, then chain with magnification — combinations become sequential imaging under time pressure.
Wave Optics
Wave Optics · independent page
Path difference first, then fringe formula; keep interference strictly to YDSE, and separate single-slit diffraction minima from YDSE bright fringes — slab/medium shifts are still YDSE path bookkeeping.
Photoelectric Effect & Bohr Model
Photoelectric & Bohr · independent page
Write K_max = hν − φ before any graph talk; for Bohr use E_n = −13.6 Z²/n² eV and take transition differences for photons — keep intensity myths and one-electron limits explicit.
X-rays & Matter Waves
X-rays & de Broglie · independent page
Separate continuum cut-off (λ_min from eV) from characteristic lines (Moseley √ν ∝ (Z−b)); use λ = h/p for matter waves.
Nuclear Physics
Nuclear Physics · independent page
Write N=N₀ e^{−λt} with T_{1/2}=ln2/λ, then mass-defect energy Q = Δm c² for α/β/γ, fission and fusion — keep MeV bookkeeping tight under time pressure.