Easy Chapters in Physics for JEE Main 2025- Check High Scoring and Expected Questions for JEE Mains Physics

Kinematics

v=u+at

This formula relates the initial velocity, final velocity, acceleration, and time taken for the motion.

s=ut + 1/2at²

This formula relates the displacement, initial velocity, acceleration, and time taken for the motion.

v²+u²=2as

This formula relates the initial velocity, final velocity, acceleration, and displacement.

Work, Energy, and Power

W = Fdcosθ

This formula relates the work done by a force, displacement, and the angle between the force and displacement. 

K.E = ½ mv²

This formula relates the kinetic energy of a body with its mass and velocity.

P = W/t

This formula relates the power of a body with the work done and the time taken.

Newton's Laws of Motion

F = ma: This formula relates the force applied to an object, its mass, and acceleration.

F= μN: This formula relates the force of friction, the coefficient of friction, and the normal force. 

Fg= mg: This formula relates the force of gravity, the mass of an object, and the acceleration due to gravity.

Rotational Motion

Equations of rotational kinematics

ω=ω₀+αt

θ = ω₀t + ½ αt²

ω₂ – ω₀² = 2αθ

θnth = ω₀ +α/2 (2n-1)

Tangential Velocity

V=2πr/time

Angular Velocity

ω=2π/T=2πf

Angular/Centripetal Acceleration

centripetal = -4π²r/T²

centripetal = -ω2r

centripetal = v²/r

Centripetal Force

Fc=-m4π²r/T²

Fc=mv²/r

Torque

Τ=F.d.sinΘ

Moment of Inertia for a system of particles

I = ∑mr²

Moment of Inertia for rigid bodies

I = ∫ r² dm

Ray Optics

Snell's Law

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Lens Maker's Formula

1/f = (n – 1) * ((1 / R1) – (1 / R2))

Thin Lens Formula

1/d_o + 1/d_i= 1/f

Wave Optics

Snell’s law of refraction

₁μ₂ = c₁/c₂ = speed of light in first medium/speed of light in second medium

Relation between phase difference & path difference

ΔΦ = 2π/λ . Δx

Young’s double slit interference experiment

Fringe Width : w = Dλ/d

Diffraction due to single slit

Angular spread of the central maxima = 2λ/d

Width of the central maxima 2λD/d

Atomic Structure

Energy of a photon to its wavelength: E = hc/λ

Bohr's Model for Hydrogen like atoms: mvr=nh/2π,
En = -(E1 * Z²) / n²,

Wavelength of a particle to its momentum: λ = h/p

Velocity of electron in nth orbit: vn = 2.165 x 106 Z/n m/s

Energy of an electron in a hydrogen atom: E = -13.6/n²

Radius of nth orbit: rn = 0.53 x 10–10 n2/Z m

Total energy of an electron: –En = –kZe2 / 2rn

Binding energy of an electron in nth state: En = –13.6 Z2/n2 eV/atom

Potential energy: PE = –kZe2 / 2rn 

Kinetic energy: KE = 1/2 mv2n = KZe2 / rn

Kinetic Theory of Gases

Boltzmann's constant: kB = nR/N

Total translational kinetic energy: K.E= (3/2)nRT

Ideal gas law: PV = nRT

Equipartition of energy: K=½ kB T for each degree of freedom

RMS speed: Vrms=√3RTM

Internal energy: U = (f/2)nRT

Average speed: V=√8RTπM

Pressure of an ideal gas: p=⅓ ρ v2rms

Most probable speed: Vp=√2RTM

Laws of Thermodynamics

Heat Transfer Formulas

Q = mc????T

This formula relates the amount of heat transferred, the specific heat capacity, the mass of the object, and the change in temperature.

Q = ml

This formula relates the amount of heat required to change the state of a substance, the mass of the substance, and the latent heat of fusion/vaporisation.

Thermodynamic Processes Formulas

PV = nRT

This formula relates the pressure, volume, number of moles, gas constant, and temperature of an ideal gas. 

Q= ΔU + W

This formula relates the heat supplied to a system, the change in its internal energy, and the work done on it.

Laws of Thermodynamics Formulas

ΔS = Q/T

This formula relates the change in entropy, the amount of heat transferred, and the temperature of the system.

ΔU = Q - W

This formula relates the change in internal energy, the heat supplied to the system, and the work done on the system.