List of top Questions asked in JEE Main- 2026

Two wires are joined together and elongated with force as shown in the figure. If $ \dfrac{Y_1}{Y_2} = \dfrac{20}{11} $, find $ \dfrac{\ell_1}{\ell_2} $ so that they have same elongation.

If $P$ is the midpoint of median, find distance of COM from $P$.

A small drop of mass $1\,g$ starts falling from rest from a height of $1\,km$. When it reaches the ground with speed $5\,m/s$, magnitude of work done by resistance force is $x\times10^{-3}\,J$. Find $x$.

Shortest wavelength of Lyman series is $x$. Find the difference of wavelengths of first Balmer and second Balmer line in terms of $x$.

Unpolarised light with intensity $I_0$ is incident on a polariser. Find angle between axis of polariser and analyser such that intensity of emergent light becomes $ \frac{3I_0}{8} $.

A cube of side $1\,\text{mm}$ is placed at centre of circular coil of radius $10\,\text{cm}$. Current flowing in coil is $2\,A$. Find magnetic field energy stored in cube. ($\pi = 3.14$)

Bulk modulus of an ideal gas for isothermal process initially is $B$. Gas is compressed from volume $V_0$ to $ \frac{V_0}{3} $ isothermally. Find the work done by gas.

Electric field in space is given by \[ \vec{E} = 2x\hat{i} + 3y^2\hat{j} + 4\hat{k} \] A charge $q = 3\,C$ is taken from $r_1(0,-1,-3)$ to $r_2(5,1,2)$. Find magnitude of $ \Delta U $.

The dimensions of a solid cylinder is measured as given Mass $= 19.42 \pm 0.02 \,kg$ Diameter $= 20.20 \pm 0.02 \,cm$ Length $= 10.10 \pm 0.02 \,cm$ Find out % error in density.

Find minimum $R_s$ so that LED light does not get damaged (power rating of LED is $2\,mW$).

Intensity of two sources is same and path difference at point $A$ and $B$ are $ \frac{\lambda}{6} $ and $ \frac{\lambda}{3} $ respectively. Ratio of intensity at $A$ and $B$ will be.

A sphere of mass $5\,kg$ and radius $4\,cm$ is rotating about a fixed axis along its diameter with $1200\,\text{rpm}$. To stop it in $10\,s$, a torque is applied. Find magnitude of torque required and number of revolutions made before it stops respectively :-

For the given circuit, find the ratio of instantaneous voltage across the inductor when current is $2\,\text{mA}$ and when current is $4\,\text{mA}$.

A particle is performing SHM of amplitude $A$. Find the time required for particle to go from mean position to $ \dfrac{A}{\sqrt{2}} $. Time period of SHM is $5$ sec :-

In YDSE a glass slab of thickness $8\,\mu m$ is introduced in front of a slit. If central maxima shifts to the position of 4th minima, then find refractive index of glass slab $(\lambda = 500\,\text{nm})$:

Find heat dissipated in $6\Omega$ resistance in $100$ seconds in the given circuit.

Find transverse magnification due to curved boundary between two mediums as shown in the figure. Refractive index of second medium $n_2 = 1.4$.

A particle is released from point $A$ of the track as shown in the figure. Find $h$ so that the normal reaction at the highest point is 3 times the weight of the block. The surface is smooth.

Electric field due to a half ring at the center is $100\,\text{N/C}$. Find the charge on the ring. Radius of the ring is $10\,\text{cm}$.

In an AC circuit, supply voltage $ V_{\text{rms}} = 1000\,\text{V} $, $ R = 80\,\Omega $, $ X_L = 80\,\Omega $, and source frequency $ f = 50\,\text{Hz} $. Find the power factor.

The area (in square units) of the region $ \{(x, y) : x^2 - 8x \le y \le -x \} $, is

Two sphere are connected with a conducting wire. $E_{S_1}$ & $E_{S_2}$ are electric field at surface of sphere at equilibrium, find $\frac{E_{S_1}}{E_{S_2}}$.

Let $ A = \begin{bmatrix} 1 & 0 & 0 \\ 3 & 1 & 0 \\ 9 & 3 & 1 \end{bmatrix} $. If $ B = [b_{ij}]_{3 \times 3} $ and $ B = A^{99} - I $, then find $ \frac{b_{31} - b_{21}}{b_{32}} $.

Given above is the concentration vs time plot for a dissociation reaction : $A \to nB$. Based on the data of the initial phase of the reaction (initial 10 min), the value of n is ____.

As shown in the figure, the ratio of $T_1$ and $T_2$ is