Re-NEET 2026 Physics — High-Weightage Chapters, Complete Formula List & Last 4 Days Strategy
Physics is where most NEET aspirants lose marks they shouldn't. With 45 questions and 180 marks at stake, Electricity, Optics, and Modern Physics together form the largest part of the Physics paper. Questions are mostly repeated from selected core chapters.
With 4 days left for Re-NEET 2026, this is not the time to read theory. It is the time to revise formulas, solve MCQs, and fix your weakest chapters fast.
📊 Physics Chapter-Wise Weightage
Class 11 Physics constitutes about 46% of NEET Physics questions and Class 12 contributes around 54%. Knowing this distribution helps better planning.
Class 11 Physics (~20 questions) • Laws of Motion: 2–3 (🔴 Very High) • Work, Energy & Power: 2–3 (🔴 Very High) • Rotational Motion: 2–3 (🔴 Very High) • Gravitation: 1–2 (🟠 High) • Thermodynamics: 2–3 (🔴 Very High) • Waves & Oscillations: 2–3 (🟠 High) • Kinetic Theory of Gases: 1–2 (🟠 High)
Class 12 Physics (~25 questions) • Current Electricity: 3–4 (🔴 Highest) • Ray Optics: 3–4 (🔴 Highest) • Electrostatics: 3–4 (🔴 Highest) • Magnetism & Moving Charges: 2–3 (🔴 Very High) • Modern Physics: 4–5 (🔴 Highest) • Electromagnetic Induction: 2–3 (🟠 High) • Wave Optics: 1–2 (🟠 High) • Semiconductors: 1–2 (🟠 High)
🎯 Top 5 Chapters — Focus Here First
The highest weightage chapters for NEET Physics include Current Electricity, Ray Optics, Rotational Motion, Magnetism, and Modern Physics.
Modern Physics (4–5 questions) — Easiest High-Scorer Modern Physics usually gives 4–5 questions in NEET. Topics like Atoms, Nuclei, Dual Nature, and Semiconductors are important and easy to score. • Photoelectric effect — Einstein's equation • Bohr's model — energy levels, radius, velocity • Nuclear fission and fusion • Radioactive decay — half life • de Broglie wavelength
Current Electricity (3–4 questions) Current Electricity is one of the highest weightage chapters in NEET Physics, consistently appearing every year. • Ohm's law and resistivity • Kirchhoff's laws — KCL and KVL • Wheatstone bridge — balanced condition • Potentiometer — working principle • Cell combinations — series and parallel
Ray Optics (3–4 questions) If you master Current Electricity, Ray Optics, and Electrostatics, you already cover a big part of NEET Physics weightage. • Mirror formula: 1/f = 1/v + 1/u • Lens formula and magnification • Prism — angle of deviation, minimum deviation • Total internal reflection — critical angle • Optical instruments — microscope, telescope
Electrostatics (3–4 questions) • Coulomb's law • Electric field and potential • Capacitors — series and parallel • Gauss's law applications • Energy stored in capacitor
Rotational Motion (2–3 questions) • Moment of inertia — all standard objects • Torque and angular momentum • Conservation of angular momentum • Rolling motion — kinetic energy
📐 Complete Physics Formula List
Mechanics: v = u + at s = ut + ½at² v² = u² + 2as F = ma p = mv KE = ½mv² PE = mgh W = Fs cosθ Power = W/t = Fv
Rotational Motion: τ = Iα = r × F L = Iω KE(rotation) = ½Iω² I(ring) = mr² I(disc) = ½mr² I(sphere) = 2/5 mr² I(rod about centre) = ml²/12
Gravitation: F = Gm₁m₂/r² g = GM/R² v(escape) = √(2gR) = 11.2 km/s v(orbital) = √(gR) T² ∝ r³ (Kepler's third law)
Thermodynamics: PV = nRT ΔU = nCvΔT W = PΔV η(Carnot) = 1 - T₂/T₁ Q = mcΔT
Waves: v = fλ v(sound) = √(γP/ρ) Beats = f₁ - f₂ f(string) = 1/2L × √(T/m)
Current Electricity: V = IR R = ρl/A P = VI = I²R = V²/R 1/R(parallel) = 1/R₁ + 1/R₂ R(series) = R₁ + R₂ E = V + Ir
Electrostatics: F = kq₁q₂/r² E = kq/r² V = kq/r C = Q/V C(parallel) = C₁ + C₂ 1/C(series) = 1/C₁ + 1/C₂ U = ½CV²
Magnetism: F = qvB sinθ F = BIL sinθ B(solenoid) = μ₀nI τ = BIL sinθ = NBIA sinθ
Electromagnetic Induction: EMF = -dΦ/dt Φ = BA cosθ EMF(motional) = Blv E(rms) = E₀/√2
Modern Physics: E = hf = hc/λ KE(max) = hf - φ (photoelectric) r(n) = 0.529n² Å (Bohr radius) E(n) = -13.6/n² eV λ = h/mv (de Broglie) N = N₀(½)^(t/t½) (radioactive decay)
Optics: 1/f = 1/v - 1/u (lens) 1/f = 1/v + 1/u (mirror) n = c/v = sin i/sin r P(lens) = 1/f(metres) sin C = 1/n (critical angle)
⚡ Last 4 Days Physics Strategy
Day 1 — June 17 (Today) Modern Physics: all formulas + 20 MCQs Current Electricity: Kirchhoff's + Wheatstone bridge problems
Day 2 — June 18 (Mock Test Day) Full mock test at 2 PM sharp — simulate exam conditions Analyse Physics errors only — which chapters failed you
Day 3 — June 19 Ray Optics + Electrostatics revision Solve 30 Physics MCQs timed
Day 4 — June 20 (Day Before Exam) Formula sheet revision only — no new problems Sleep by 10 PM
⚠️ What NOT to Do in Physics
• Do not attempt Waves and Vectors from scratch — very low weightage, high time cost • Do not solve derivations — only formulas and applications • Do not skip units and dimensions — 1–2 questions every year, takes 2 minutes to revise • Do not panic if a question seems new — eliminate wrong options and move on
💬 Final Word
Mechanics remains the most important Physics foundation because it contributes the largest number of questions and underlies many other concepts. But in the last 4 days, Modern Physics and Optics are your fastest wins — memorise the formulas and you can pick up 8–10 marks quickly.
Take a full mock test today to see exactly which Physics chapters are costing you marks.
👉 Free Re-NEET 2026 Mock Test — theexaminer.in
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