JEE Main Physics Formulas 2026: Chapter-Wise Important Equations

JEE Main Physics Formulas 2026: The JEE Main 2026 Session 2 examination is scheduled to be conducted from 1 April to 10 April 2026, making this phase crucial for aspirants aiming to improve their scores or qualify for further stages. As the exam approaches, effective last-minute revision becomes essential, with focused preparation playing a key role in performance.

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For Session 2 candidates, quick access to important Physics formulas can greatly improve problem-solving speed and accuracy. The JEE Main Physics Formulas 2026 include frequently used equations from all major chapters, helping students handle both numerical and conceptual questions with confidence. Consistent formula revision supports better time management, reduces avoidable mistakes, and enhances overall exam performance.

Also Check: JEE Main 2026 Session 1 Question Paper Exam Analysis, Detailed Solution

JEE Mains 2026 Session 1 Physics Questions Feedback

Based on shift-wise student feedback from JEE Main 2026 Session 1, several useful trends have emerged that can help Session 2 aspirants fine-tune their Physics preparation:

1. Physics questions were a mix of conceptual understanding and numerical application, with many problems relying on formula-based problem-solving rather than purely theoretical recall.
2. Mechanics, Electrodynamics, Thermodynamics, Optics, and Modern Physics were the major areas tested, with questions ranging from straightforward formula application to multi-step calculations.
3. Concepts such as kinematics, laws of motion, energy, gravitation, electrostatics, and circuits appeared frequently, while numerical intensity varied slightly across shifts.
4. Overall difficulty has remained moderate, with some shifts leaning slightly more calculative and others more concept-driven, reflecting a balanced assessment of both understanding and problem-solving speed.

Important JEE Main Physics Formulas 2026

Below are the chapter-wise most important Physics formulas JEE Main for easy understanding and recall.

Mechanics Formulas

Mechanics forms the foundation of Physics and includes motion, force, energy, rotation, and gravitation.

Kinematics

• Velocity:
  v = u + at
  
  

• Displacement:
  s = ut + ½at²
  
  

• Velocity–Displacement relation:
  v² = u² + 2as
  
  

Projectile Motion

• Time of Flight:
  T = (2u sinθ) / g
  
  

• Maximum Height:
  H = (u² sin²θ) / (2g)
  
  

• Range:
  R = (u² sin2θ) / g
  
  

Newton’s Laws of Motion

• Force:
  F = ma
  
  

• Frictional Force:
  F = μN
  
  

Work, Energy, and Power

• Work Done:
  W = Fd cosθ
  
  

• Kinetic Energy:
  KE = ½mv²
  
  

• Gravitational Potential Energy:
  PE = mgh
  
  

Rotational Dynamics

• Torque:
  τ = Iα
  
  

• Angular Momentum:
  L = Iω
  
  

Gravitation

• Escape Velocity:
  ve = √(2GM / R)
  
  

• Orbital Velocity:
  vo = √(GM / r)
  
  

• Gravitational Potential:
  V = −GM / r
  
  

Electrodynamics and Magnetism Formulas

This section covers electric charges, current, fields, and magnetic effects.

Electrostatics & Capacitance

• Coulomb’s Law:
  F = k(q₁q₂ / r²)
  
  

• Electric Field:
  E = F / Q
  
  

• Electric Potential:
  V = kq / r
  
  

• Capacitance (Parallel Plate):
  C = ε₀A / d
  
  

• Energy Stored in Capacitor:
  U = ½CV²
  
  

Current Electricity

• Ohm’s Law:
  V = IR
  
  

• Current:
  I = Q / t
  
  

• Kirchhoff’s Voltage Law:
  ΣΔV = 0
  
  

Magnetic Effects of Current

• Biot–Savart Law:
  dB = (μ₀ / 4π) × (I dl sinθ / r²)
  
  

• Magnetic Force on Charge:
  F = q (v × B)

Heat and Thermodynamics Formulas

The Heat and Thermodynamics is an important chapter for JEE Main Physics. The key formulas of this chapter are provided below:

Thermodynamics

• First Law:
  ΔU = Q − W
  
  

• Work Done (Isothermal Process):
  W = nRT ln(V₂ / V₁)
  
  

• Carnot Engine Efficiency:
  η = 1 − (T₂ / T₁)
  
  

Kinetic Theory of Gases

• Ideal Gas Equation:
  PV = nRT
  
  

• RMS Speed:
  vrms = √(3RT / M)

Optics and Waves Formulas

Here are the important JEE Main Physics Formulas from the Optics and Waves chapter:

Ray & Wave Optics

• Lens Maker’s Formula:
  1/f = (μ − 1)(1/R₁ − 1/R₂)
  
  

• Mirror Formula:
  1/f = 1/v + 1/u
  
  

• Young’s Double Slit Fringe Width:
  β = λD / d
  
  

Oscillations and Waves

• SHM Displacement:
  x = A sin(ωt + φ)
  
  

• Time Period of Simple Pendulum:
  T = 2π√(L / g)
  
  

• Doppler Effect:
  f′ = f[(v ± vo)/(v ∓ vs)]

Modern Physics and Semiconductors Formulas

Students must learn these formulas to strengthen Modern Physics and Semiconductor concepts for JEE Main:

Atoms, Nuclei & Dual Nature

• Photovoltaic Equation:
  Kmax = hf − φ
  
  

• De Broglie Wavelength:
  λ = h / p
  
  

• Radioactive Decay Law:
  N = N₀e⁻ˡᵗ
  
  

Semiconductors

• Mass Action Law:
  ni² = ne nh
  
  

• Transistor Current Gain:
  β = IC / IB

How to Use JEE Main Physics Formula Sheet Effectively?

The JEE Main Physics Formulas sheet is a crucial tool for aspirants to learn all the important formulas and equations quickly. Here’s how you can use it effectively to boost your JEE Main Physics score:

• Revise Daily, Not Occasionally: Spend 15–20 minutes daily revising formulas to improve recall speed and reduce exam-time panic.

• Understand the Formula Meaning:  Know what each term represents physically; understanding helps apply formulas correctly in tricky questions.

• Link Formulas with Concepts: Connect every formula to a concept or question type so you know when and where to use it.

• Practice PYQs with the Formula Sheet: Solve previous year questions using the formula sheet to train quick identification and application.

• Check Dimensions: Use dimensional analysis to verify formulas and eliminate incorrect options in MCQs.

• Maintain Unit Consistency:  Always convert values to SI units to avoid calculation errors despite knowing the right formula.

• Focus on High-Weightage Topics: Revise formulas from Modern Physics, Current Electricity, and Electromagnetism more frequently.

• Use Before and After Mock Tests: Revise before mocks and note forgotten formulas after mocks to strengthen weak areas.