Preparing for the Joint Entrance Examination (JEE) is a test of both knowledge and strategy. Every year, lakhs of aspirants across India compete for a seat in the country’s premier engineering institutes, and what often makes the difference between success and struggle is not just hard work, but smart revision.One of the smartest ways to revise in the final stretch is by mastering the formulas that form the backbone of problem-solving. JEE questions may vary in difficulty, but at their core, they often rely on a handful of fundamental equations from Physics, Chemistry, and Mathematics. Here, we bring you 10 important formulas every JEE aspirant must keep at their fingertips.
Physics
1. Newton’s Second Law of Motion
F = maThe foundation of mechanics, this equation defines how force produces acceleration. In JEE, it appears directly in dynamics, circular motion, and collision problems.
2. Work–Energy Theorem
W=ΔK=21mv2−21mu2A vital shortcut in mechanics, it helps bypass lengthy force-based calculations by directly relating work done to change in kinetic energy.
3. Gravitation and Escape Velocity
U=−GMm/r, ve=2GM/RFrom orbital mechanics to satellite motion, these formulas explain everything from potential energy in a gravitational field to the minimum speed required to leave Earth’s pull.
4. Coulomb’s Law and Potential
F=1/4πε0 2q1q2/r, V=1/4πε0 q/rElectrostatics is a JEE favourite, and these expressions for electric force and potential are indispensable in problem-solving.
5. Simple Harmonic Motion (SHM)
x=Asin(ωt+ϕ),T=2π m/k,ω= k/mOscillations frequently appear in both mechanics and waves. Knowing these relations ensures speed and accuracy in SHM problems.
Chemistry
6. Ideal Gas Equation
PV = nRTA universal relation in physical chemistry, it links pressure, volume, and temperature of gases. It forms the basis of thermodynamics and gaseous state problems.
7. Arrhenius Equation
k=Ae−Ea/RTA staple in chemical kinetics, this equation highlights the dependence of reaction rate on activation energy and temperature.
8. Nernst Equation
E=E∘−0.0591/n logQEssential for electrochemistry, it helps calculate electrode potential under non-standard conditions—frequently tested in JEE Mains and Advanced.
Mathematics
9. Quadratic Formula
x=−b±b2−4ac/2aWhether in algebra, coordinate geometry, or optimisation, this formula for solving quadratic equations is indispensable. The discriminant D = b^2 – 4ac also determines the nature of roots.
10. Definite Integral (Fundamental Theorem of Calculus)
∫abf(x)dx=F(b)−F(a)JEE frequently tests integration in the form of areas, averages, and definite integrals. Mastery here ensures quick solutions to lengthy calculus problems.
Why these 10 formulas matter
The JEE does not test rote learning but conceptual clarity and application. These formulas act as anchors—once you know them, you can build complex problem-solving strategies around them. Moreover, having them memorized reduces exam-time pressure and saves valuable seconds.As exam day approaches, aspirants should not get lost in the vast ocean of theory. Instead, focus on the essentials that yield maximum results. Revising these 10 formulas, practicing their applications through past year papers, and timing yourself on mock tests can significantly boost performance.In the high-stakes journey of JEE, sometimes it’s not about knowing everything—it’s about knowing the right things well.
