JEE Main Physics Formulas 2026 - Topic wise Important Formulas

JEE Main Physics Formulas 2026 - Topic wise Important Formulas

Team Careers360Updated on 27 Sep 2025, 03:09 AM IST

JEE Main Physics Formulas 2026 - JEE Main exam is one of the top exams for engineering in India. Having a consolidated formula sheet makes your preparation for the JEE Main exam more manageable and efficient. 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 2026 Physics formulas based on the JEE main 2026 syllabus. Candidates can follow the Physics formulas to prepare for the IIT JEE exam.

JEE Main Physics Formulas 2026 - Topic wise Important Formulas
JEE Main Physics Formulas 2026

Few Important JEE Main Physics Formulas 2026

Chapter - Kinematics

  • Speed and Velocity

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I. Speed Formula-

Speed = Change in distance change in time
v= distance time
- Tips of Speed-
1. S.I. unit ms1 or meters per second.
2. Dimensions =LT1
3. Speed is a scalar quantity.
- E.g: A body covers a distance of 18 m in 1 sec

Using the formula of speed. v= distance time =18 m1 s18 m/s

II. Average Speed and Instantaneous Speed

  1. Average Speed Formula-

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Average speed = total distance covered total time taken vav=st

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

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vav=st50 m5 s=10 m/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 12 time then average speed is calculated by the Formula- Vαv=s1+s2t1+t2
2. Instantaneous Speed-
- It is the speed at that particular instant or small interval of time.
- Formula-

vinst =limΔt0ΔxΔt

III. Velocity

  • Rate of change of displacement with time.

  • Formula-

V= displacement time

- Tips For Velocity-
1. S.I. unit m/s
2. Dimensions- LT1
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 = Total Displacement Total time taken Vavg =Snet t
2. Instantaneous Velocity Formula-

Vinst =limΔt0ΔxΔt


Chapter - Work Energy and Power
- Work done by a constant force-
1. The scalar product of the force vector (F) and the displacement vector (S)

W=FS

2. The product of the magnitude of force (F) magnitude of displacement (S) and cosine of the angle between them (Θ)

W=FScosθ

  1. 3. If the number of forces F1,F2,F3,Fn, are acting on a body and it shifts from position vector r1 to position vector r2

    Then

    W=(F1+F2+F3+Fn)(r2r1)=Fnetrnet

    - 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=Fds


    Where F is a variable force and d is a small displacement
    - Kinetic energy

    K.E.=12mv2


    Where m mass

    v 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=12mv212mv02W=kfki


    Where m= mass of the body

v0= initial velocity
v= final velocity
- Relation of kinetic energy with linear momentum

k=p22m


Where p momentum

m 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.

UiUf=rirffds


Where, Uf - final potential energy
Ui - initial potential energy
f-force
ds - small displacement
ri - initial position
rffinal 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-

Pav=ΔwΔt=0tpdt0tdt


Instantaneous power-

P=dwdt=P=Fv


Where, F force

v velocity

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

Experts 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.


Also Read:


Frequently Asked Questions (FAQs)

Q: How many questions of Physics are in the JEE Main Exam?
A:

In the JEE Main Exam, there are 25 questions of physics out of which 20 questions in section A will be MCQ and 5 questions in section B will be questions with numerical value answers. 

Q: Which chapter has more weightage in Physics in the JEE Main Exam?
A:

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

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

Speed= (distance) / (time)

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Questions related to JEE Main

On Question asked by student community

Have a question related to JEE Main ?

Hello

If you want to practice for JEE Mains exams, then you need to practice by giving mock tests, and for that, you can refer to Careers360.com (//Careers360.com) as it is a single platform for learn practice and implementing. It will help you with mock papers, you can practice them, and know about the level of your studies. You can also practice with previous year papers as they will help you a lot from the Jeemain official website.

Hello

If you are aiming for JEE, both Presidency South and DPS South with Allen integration are solid.

Allen is strong for JEE prep, but the school environment and faculty make a big difference. Check past results and check for the best results among those campuses. Go where you can learn, grab opportunities, and make a competition because surviving is not enough; learning matters. Visit both campuses and then choose where to go.

Based on the latest available guidelines from the National Testing Agency (NTA) and trends from previous years (as of September 25, 2025), I'll address your query step by step. Note that the official JEE Main 2026 notification is expected in late 2025 (likely October-November), so requirements may be confirmed then. However, for 2025, NTA has introduced specific rules for EWS (Economically Weaker Sections) candidates, and these are likely to continue for 2026 with minor updates. Your question focuses on two main parts: (1) Whether NTA requires the EWS certificate number during registration, and (2) The timing for obtaining the certificate (before January 2026 or after April 2026). I'll cover eligibility, validity, and tips as well.

As of now, the official chapter-wise weightage for JEE Main 2026 hasn’t been released by NTA. Based on past data, Physics (Modern Physics, Thermodynamics), Chemistry (Organic Chemistry), and Mathematics show consistent weightage. Focus on these while covering the syllabus. Check https://ncertsolution.it.com for updates.

Hello,

With a 20,000 rank in JEE Main and Maharashtra domicile, you might get into some NITs and IIITs in branches like computer science, mechanical, or civil engineering. Some good options like

  • IIIT Nagpur
  • IIIT Kancheepuram
  • IIIT Pune
  • NIT Surat
  • Some GFTIs

I hope it will clear your query!!