JEE Main Physics Formulas 2027 - Topic wise Important Formulas

Important JEE Main 2027 Physics Formulas

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Aspirants preparing for JEE Main must remember that, along with concepts, one needs to revise and remember the formulas, which are very important while solving any problems. As JEE Main Physics formulas are given below, these formulas need to be memorised daily, as direct questions and formulas are asked in exams. Students should also solve JEE Main Chapter-Wise PYQs to improve their preparation.

Below are a few important formulas for JEE Main Physics.

Formulas for Kinematics

1. Average speed = Total distance/Total time
2. Average velocity $=$ Total displacement/Total time
3. Acceleration $=($ Final velocity - Initial velocity $) /$ Time taken
4. First Equation of Motion

$v=u+a t$

5. Second Equation of Motion

$s=u t+\frac{1}{2} a t^2$

6. Third Equation of Motion

$v^2=u^2+2 a s$

7. Displacement in the $n^{\text {th }}$ Second

$s_n=u+\frac{a}{2}(2 n-1)$

8. Relative Velocity

$\vec{v}_{A B}=\vec{v}_A-\vec{v}_B$

9. Free Fall

$\begin{gathered}
v=u+g t \\
h=u t+\frac{1}{2} g t^2 \\
v^2=u^2+2 g h
\end{gathered}$

Newton's Law of Motion

1. Newton's Second Law

$\vec{F}=m \vec{a}$

2. Momentum

$\vec{p}=m \vec{v}$

3. Force in Terms of Momentum

$\vec{F}=\frac{d \vec{p}}{d t}$

4. Impulse

$J=F \Delta t=\Delta p$

5. Newton's Third Law

$\vec{F}_{A B}=-\vec{F}_{B A}$

6. Weight

$W=m g$

7. Frictional Force

$f=\mu N$

8. Maximum Static Friction

$f_{\max }=\mu_s N$

9. Kinetic Friction

$f_k=\mu_k N$

10. Angle of Friction

$\tan \lambda=\mu$

11. Angle of Repose

$\tan \theta=\mu$

12. Centripetal Force

$F_c=\frac{m v^2}{r}=m \omega^2 r$

Formulas for Work, Energy, and Power:

1. Work Done by a Constant Force

$W=F s \cos \theta$

2. Work Done by a Variable Force

$W=\int \vec{F} \cdot d \vec{r}$

3. Kinetic Energy

$K=\frac{1}{2} m v^2$

4. Work-Energy Theorem

$W_{\text {net }}=\Delta K$

5. Potential Energy

$U=m g h$

6. Gravitational Potential Energy

$U=-\frac{G M m}{r}$

7. Elastic Potential Energy

$U=\frac{1}{2} k x^2$

8. Mechanical Energy

$E=K+U$

9. Conservation of Mechanical Energy

$K_1+U_1=K_2+U_2$

10. Power

$P=\frac{W}{t}$

11. Instantaneous Power

$P=\vec{F} \cdot \vec{v}$

12. Efficiency

$\eta=\frac{\text { Useful Output Energy }}{\text { Input Energy }} \times 100$

13. Power in Terms of Force and Velocity

$P=F v \cos \theta$

Electric Charge and Fields Formulas:

1. Electric Field = force per unit charge $E=\frac{F}{Q}$

2. Coulomb's Law: $F=k \frac{q_1 q_2}{r^2}$
3. Energy of an electric dipole: $U=-p E \cos \theta$
4. Energy of a magnetic dipole: $U=-\mu B \cos \theta$
5. Electric Charge: $Q= \pm n e$
6. Electrostatic Force $F=k \frac{q_1 q_2}{r^2}$
7. The current at Time t: $i=\frac{d Q}{d t}$
8. Law of Conservation of Charge: $I_3=I_1+I_2$
9. Resistivity: $\rho(T)=\rho\left(T_0\right)\left[1+\alpha\left(T-T_0\right)\right]$

10. Lorentz Force: $\vec{F}=q[\vec{E}+(\vec{v} \times \vec{B})]$
11. Magnetic Flux through Area

$d \Phi=\vec{B} \cdot d \vec{S}=B d S \cos \theta$

For the total magnetic flux through a surface:

$\Phi=\int \vec{B} \cdot d \vec{S}$

Projectile Equation of Motion:

1. Horizontal Displacement

$x=u \cos \theta t$

2. Vertical Displacement

$y=u \sin \theta t-\frac{1}{2} g t^2$

3. Equation of Trajectory

$y=x \tan \theta-\frac{g x^2}{2 u^2 \cos ^2 \theta}$

4. Time of Flight

$T=\frac{2 u \sin \theta}{g}$

5. Maximum Height

$H=\frac{u^2 \sin ^2 \theta}{2 g}$

6. Horizontal Range

$R=\frac{u^2 \sin 2 \theta}{g}$

7. Maximum Range

$R_{\max }=\frac{u^2}{g}$

8. Angle for Maximum Range

$\theta=45^{\circ}$

Laws of Gravity

1. Gravitational force $F=G \frac{M m}{r^2}$

2. Acceleration Due to Gravity

$g=\frac{G M}{R^2}$

3. Gravitational Potential Energy

$U=-\frac{G M m}{r}$

4. Escape Velocity

$v_e=\sqrt{\frac{2 G M}{R}}=\sqrt{2 g R}$

5. Orbital Velocity

$v_o=\sqrt{\frac{G M}{r}}$

6. Time Period of a Satellite

$T=2 \pi \sqrt{\frac{r^3}{G M}}$

With these formulas, also try to solve the JEE Main previous year question paper, and also go through the most repeated questions of JEE Main.

Most Important Physics Formulas for Quick Revision

If you have very little time, start with these formula groups:

Preparation tips for JEE Main

Given below are some JEE Main preparation tips to help you prepare better and score good marks in the exam:

1. First, students need to know the syllabus and JEE Main exam pattern so that they can get familiarized with the exam and understand the basic requirements and eligibility criteria for the exam before they start preparing for it.

2. Be aware of the high-scoring topics of JEE Main and focus on the chapters accordingly.

3. Develop a study plan that is compatible with your level of preparation and that suits you. Set monthly, weekly, and daily goals for your preparation and dedicate more time to difficult subjects or topics.

4. Students should have a clear understanding of the concepts. They must know the logic and derivation of each and every formula.

5. Regularly practise questions. Practise the previous years’ JEE Main question papers and keep on attempting the JEE Main mock tests and sample papers.

How to Revise Physics Formulas for JEE Main 2027

Just reading your JEE Main Physics Formulas 2027 sheet again and again does not work. You need active recall, not passive reading.

1. Build your own Physics Formula Sheet for JEE Main 2027, chapter-wise, in your own handwriting. Self-made notes stick better.

2. Close your JEE Main Physics Formula PDF and write formulas from memory on a blank page. Whatever you miss, revise that first.

3. Add a one-line meaning next to each formula in your JEE Main Physics Revision Notes. This helps with concept-based questions.

4. Focus more on Important Physics Formulas for JEE Main from high-weightage chapters, Current Electricity, Rotational Motion, and Modern Physics.

Common Mistakes While Revising Physics Formulas

Even well-prepared students lose marks because of small revision errors. These are the most common ones to watch out for before JEE Main 2027.

1. Memorising without conditions: Note the assumptions below every formula. Applying the wrong formula to a modified situation is a very common error.

2. Skipping the vector form: Direction matters in Magnetism and Electrostatics. Your JEE Main Physics Revision Notes must include both scalar and vector forms.

3. Confusing similar formulas: Revise look-alike formulas side by side in your Physics Formula Sheet for JEE Main 2027 to register the difference clearly.

4. Only reading, never writing: Closing your JEE Main Physics Formula PDF and testing recall on paper is the only real check of whether you actually know a formula.