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JEE Main Physics Formulas 2025 - Topic wise Important Formulas

JEE Main Physics Formulas 2025 - Topic wise Important Formulas

Edited By Team Careers360 | Updated on Jul 10, 2024 04:48 PM IST | #JEE Main

JEE Main Physics Formulas 2025 - Preparation for the JEE Main exam becomes more manageable and efficient. JEE Main is one of the top Exams for engineering. Candidates should manage all three subjects properly, when candidates have a compiled list of important physics formulas candidates can revise the concepts faster and solve numerous problems easily. Knowing when and which formula to apply is crucial for aspirants. Here are some important JEE Main Physics formulas 2025 based on the JEE syllabus. Candidates can follow the Physics formulas to prepare for the IIT JEE exam:
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JEE Main Physics Formulas 2025 - Topic wise Important Formulas
JEE Main Physics Formulas 2025 - Topic wise Important Formulas

Few Important JEE Main Physics Formulas 2025

Chapter - Kinematics

  • Speed and Velocity

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I. Speed Formula-

Speed = \frac{Change\, in \, distance}{change \, in\, time}

v=\frac{distance }{time}

  • Tips of Speed-

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  1. S.I. unit\rightarrow ms^{-1} or meters per second.

  2. Dimensions=LT^{-1}

  3. Speed is a scalar quantity.

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  • E.g: A body covers a distance of 18m in 1 sec

Using the formula of speed. v= \frac{distance}{time}= \frac{18m}{1s}\Rightarrow 18m/s

II. Average Speed and Instantaneous Speed

  1. Average Speed Formula-

Average\, speed =\frac{total \, distance\, covered}{total \, time\, taken}, v_{av}= \frac{s}{t}

  • E.g. A body covers a total distance of 50 m with variable speed in 5 sec.

v_{av}= \frac{s}{t}

\Rightarrow \frac{50m}{5s}= 10m/s

Average Speed = 10 m/s

  • Tips for average speed-

If an object or body covers s1 distance in t1 time and s2 distance in t2 time then average speed is calculated by the

Formula- V_{av}= \frac{s_{1}+s_{2}}{t_{1}+t_{2}}

  1. Instantaneous Speed-

  • It is the speed at that particular instant or small interval of time.

  • Formula-

v_{inst}= \lim_{\Delta t\rightarrow 0}\frac{\Delta x}{\Delta t}

III. Velocity

  • Rate of change of displacement with time.

  • Formula-

V=\frac{displacement}{time}

  • Tips For Velocity-

  1. S.I. unit \rightarrow m/s

  2. Dimensions-LT^{-1}

  3. Velocity is a vector quantity.

  4. Velocity is also called speed in a definite (particular) direction.

IV. Average Velocity and Instantaneous Velocity

  1. Average Velocity- Formula-

Average \ \ Velocity=\frac{Total \ \ Displacement}{Total \ \ time \ \ taken}, \vec{V}_{avg}=\frac{\vec{S}_{net}}{t}

  1. Instantaneous Velocity Formula-

\vec{V}_{inst}= \lim_{\Delta t\rightarrow 0}\frac{\vec{\Delta x}}{\Delta t}

Chapter - Work Energy and Power

  • Work done by a constant force-

  1. The scalar product of the force vector (\underset{F}{\rightarrow}) and the displacement vector (\underset{S}{\rightarrow})

W=\vec{F}.\vec{S}

  1. The product of the magnitude of force \left ( F \right )magnitude of displacement \left (S \right ) and cosine of the angle between them \left (\Theta \right )

W=FS\cos \Theta

  1. If the number of forces \vec{F}_{1},\vec{F}_{2},\vec{F}_{3} ......,\vec{F}_{n}, are acting on a body and it shifts from position vector \vec{r_1} to position vector \vec{r_2}

Then W=\left(\vec{F}_{1}+\vec{F}_{2}+\vec{F}_{3} \ldots \ldots \ldots+\vec{F}_{n}\right) \cdot\left(\vec{r}_{2}-\vec{r}_{1}\right)=\vec{F}_{n e t} \cdot \vec{r}_{n e t}

  • Work done by a variable force

Force is a vector quantity. So it has a magnitude as well as direction. A variable force means when its magnitude its direction or both varies with position.

And work done by the variable force is given by -

W=\int \vec{F}\cdot \vec{ds}

Where \vec{F} is a variable force and \vec{ds} is a small displacement

  • Kinetic energy

K.E. = \frac{1}{2}mv^{2}

Where m\rightarrow mass

v\rightarrow velocity


  • Work-energy theorem-

Net work done by all the forces acting on a particle is equal to the change in its kinetic energy.

W=\frac{1}{2}mv^{2}-\frac{1}{2}mv{_{0}}^{2}

W= k_{f}-k_{i}

Where m=mass \: of\: the\: body

v_{0}= initial\: velocity

v= final\: velocity


  • Relation of kinetic energy with linear momentum

k= \frac{p^{2}}{2m}

Where p\rightarrow momentum

m\rightarrow mass

  • Change in potential energy -

The change in potential energy between any two points is defined as the work done by the associated conservative force in displacing the particle between these two points without any change in kinetic energy.

\small U_{i}-U_{f}= \int_{r_{i}}^{r_{f}}\vec{f}\cdot \vec{ds} ......(1)

Where, U_{f}-final\: potential\: energy

U_{i}-initial \: potential\: energy

f-force

ds-small \: displacement

r_{i}-initial \: position

r_{f}-final\: position

We can define a unique value of potential energy only by assigning some arbitrary value to a fixed point called the reference point.

  • Power

Average power-

P_{av}= \frac{\Delta w}{\Delta t}= \frac{\int_{0}^{t}p\cdot dt}{\int_{0}^{t}dt}

Instantaneous power-

P=\frac{dw}{dt}= P= \vec{F}\cdot \vec{v}

Where, \vec{F}\rightarrow force

\vec{v}\rightarrow velocity

i.e. power is equal to the scalar product of force with velocity

Experts of Careers360 have compiled a list of important formulas for JEE Mains Physics to make the preparation easy for aspirants. Candidates preparing for the JEE Main exam should remember all the major formulas.


Frequently Asked Questions (FAQs)

1. Which chapter has more weightage in Physics in the JEE Main Exam?

Current electricity, optics, and Properties of solids have more weightage in Physics JEE Main.

2. How many questions of Physics are in the JEE Main Exam?

In the JEE Main Exam, there are 30 questions of physics out of which 20 questions in section A and 10 questions in section B. In section B out of 10, 5 questions have to be attempted and there will be a negative marking.

3. What is the formula in physics which relates speed, distance traveled and time taken by the body to travel that distance?

Speed= (distance) / (time)

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Questions related to JEE Main

Have a question related to JEE Main ?

Hey there! Thanks for reaching out to Careers360 with your JEE Mains questions. I totally get it - preparing for such a big exam in 6 months can feel pretty daunting.

For JEE Mains prep in 6 months, you'll want to focus on the core topics in Physics, Chemistry, and Math. Some key areas to drill down on:

Physics: Mechanics, Electromagnetism, Optics

Chemistry: Physical Chemistry, Organic reactions

Math: Calculus, Algebra, Coordinate Geometry

The good news is that JEE Mains prep does cover a lot of ground for BITSAT too. There's quite a bit of overlap in the syllabus. You might just need to brush up on a few extra topics for BITSAT, but your JEE studying will definitely give you a solid foundation.

As for top colleges, the IITs are always popular choices. But don't forget to check out NITs and BITS Pilani too - they're excellent options.

Let me know if you need any more specific advice on your prep strategy. Wishing you all the best with your studies!

Check out our college predictor for more information

Hello,

Yes, it’s possible to score 200 marks in JEE Main with 4 months of focused preparation. Prioritize understanding key concepts and solving previous years' papers. Create a balanced study plan, covering all subjects daily, and focus on high-weightage topics. Regularly take mock tests to track your progress and improve time management. Stay consistent, avoid distractions, and review your mistakes to strengthen weak areas. Consistency and dedication are crucial.

Hope this helps you,

Thank you

Hello! I hope you're doing well. I'm reaching out from Careers360. It seems you're looking for some JEE Main physics formula sheets. I would recommend focusing on key topics like kinematics, electromagnetism, and thermodynamics. If you'd like, I can also suggest some great colleges or courses that match your interests. Feel free to ask if you'd like more information!

Hello!

For JEE Mains, some high-weightage topics you should focus on include:

Physics

  1. Electrostatics
  2. Current Electricity
  3. Optics
  4. Kinematics
  5. Laws of Motion
  6. Thermodynamics

Chemistry

  1. Chemical Bonding
  2. Periodic Table and Periodicity
  3. Stoichiometry
  4. Organic Chemistry Basics
  5. Equilibrium

Mathematics

  1. Coordinate Geometry
  2. Calculus (Limits, Derivatives)
  3. Complex Numbers
  4. Trigonometry
  5. Probability

Focusing on these topics can help maximize your score. If you want more specific resources or strategies for studying these subjects, let me know!

The following procedures are usually required in order to enrol in Narayana's CDF (Career Development Foundation) JEE 7th program:


Go to the Official Website: Visit the Narayana website to learn more about the CDF JEE course.

Application Form: Complete the program's application form. You can get this at the closest Narayana location or online.

Eligibility Requirements: Verify that you fulfil any prerequisites, including prior academic standing.

Entrance Exam: If necessary, be ready to take any entrance exams or evaluations.

Interview/Interaction: A faculty interview or interaction may be necessary for some programs.

Documents: Collect all relevant documentation, including mark sheets and ID proofs.

Remember to stay on top of application deadlines, and be well-prepared for any exams or int erviews.

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