NEET Formula Sheet 2026 - Important Formulas for Physics & Chemistry

Important NEET Physics Formula

The important physics formulas for NEET based on the NEET exam trends observed in the previous years are provided here. The table consists of the highest-scoring concepts in the last 5 years, the number of times they appeared in NEET, and the years in which questions were based on these concepts. The physics NEET 2026 formula sheet is based on these high-scoring concepts.

Physics Formula Sheet NEET 2026: Most Scoring Concepts in Physics

Let i be the amount of current in the circuit at any time, and VL, VC, and VR the potential drops across L, C, and R, respectively.

$v_R = iR \Rightarrow$ Voltage is in phase with $i$,
$v_L = i \omega L \Rightarrow$ Voltage leads $i$ by $90^{\circ}$,
$v_C = i \omega C \Rightarrow$ Voltage lags $i$ by $90^{\circ}$.

By all these, we can draw a phasor diagram as shown below –

So, from the above phasor diagram, V will represent the resultant of vectors VR and (VL−VC).

So the equation becomes –

$V = \sqrt{V_R^2 + (V_L - V_C)^2} = \sqrt{(iR)^2 + (X_L - X_C)^2} = \sqrt{(iR)^2 + \left( \omega L - \frac{1}{\omega C} \right)^2} = iZ,$

where $Z = \sqrt{R^2 + \left( \omega L - \frac{1}{\omega C} \right)^2}$ is called the impedance of the circuit.

Also, $\tan \phi = \frac{V_L - V_C}{V_R} = \frac{X_L - X_C}{R} = \frac{\omega L - \frac{1}{\omega C}}{R}.$

Important Formulas For NEET Physics - Equations Of Motion of SHM

As we know, $a = -\omega^2 x$

General equation of SHM

1. For Displacement:

$x = A \sin(\omega t + \phi)$ ; where $\phi$ is the initial phase and $(\omega t + \phi)$ is called the phase.

Various displacement equations:
(1) $x = A \sin \omega t \Rightarrow$ when the particle starts from mean position towards right.
(2) $x = -A \sin \omega t \Rightarrow$ when the particle starts from mean position towards left.
(3) $x = A \cos \omega t \Rightarrow$ when the particle starts from extreme position towards left.
(4) $x = -A \cos \omega t \Rightarrow$ when the particle starts from left extreme position towards right.

2. For Velocity ($v$):

$x = A \sin(\omega t + \phi) \Rightarrow v = \frac{dx}{dt} = A \omega \cos(\omega t + \phi) = A \omega \sin\left(\omega t + \phi + \frac{\pi}{2}\right)$

3. For Acceleration ($a$):

$x = A \sin(\omega t + \phi) \Rightarrow v = \frac{dx}{dt} = A \omega \cos(\omega t + \phi) = A \omega \sin\left(\omega t + \phi + \frac{\pi}{2}\right)$

$\Rightarrow a = \frac{dv}{dt} = -A \omega^2 \sin(\omega t + \phi) = A \omega^2 \sin\left(\omega t + \phi + \pi\right) = -\omega^2 x$

So, the phase difference between $x$ and $v$ is $\frac{\pi}{2}$.
Similarly, the phase difference between $v$ and $a$ is $\frac{\pi}{2}$.
And, the phase difference between $a$ and $x$ is $\pi$.

Differential equation of SHM:

$\frac{dv}{dt} = -\omega^2 x \Rightarrow \frac{d}{dt}\left(\frac{dx}{dt}\right) = -\omega^2 x \Rightarrow \frac{d^2x}{dt^2} + \omega^2 x = 0$

If the motion of any particle satisfies this equation, then that particle performs Simple Harmonic Motion (SHM).

NEET Chemistry Formula List

Based on the NEET 2026 exam pattern seen over the previous five years, we have assembled the important chemistry formulas for the NEET exam. The concepts that have scored the highest over the past five years, along with the number of times they have appeared and the years in which questions based on them have been asked, are listed in the table below. The NEET chemistry formula listed below is based on these high-scoring concepts:

Most Scoring Concepts In Chemistry

Important formulas from Solubility and Solubility Products for NEET 2026

General Representation:

$A_xB_y \rightleftharpoons xA^{+} + yB^{-}$

$K_{sp} = [A^{+}]^x [B^{-}]^y$

Relation between Solubility ($s$) and Solubility Product ($K_{sp}$):

$A_xB_y \rightleftharpoons xA^{+} + yB^{-}$

If solubility is $s$, then $[A^{+}] = x s$ and $[B^{-}] = y s$

Thus,
$K_{sp} = (x s)^x (y s)^y = x^x y^y s^{x + y}$

The Gas Laws — Boyle’s Law (Pressure–Volume Relationship):

$P \propto \frac{1}{V} \Rightarrow PV = k \; (\text{at constant } T)$