List of top Physics Questions asked in JEE Main

The energy $ E $ and momentum $ p $ of a moving body of mass $ m $ are related by some equation. Given that $ c $ represents the speed of light, identify the correct equation:

The velocity-time graph of an object moving along a straight line is shown in the figure. What is the distance covered by the object between $ t = 0 $ to $ t = 4s $?

Two balls are projected with the same speed at different angles. If the maximum height of the first ball is 2 times the maximum height of the second ball, find the ratio of their time of flight.

The magnitude of heat exchanged by a system for the given cyclic process ABC (as shown in the figure) is (in SI units):

Choose the correct nuclear process from the below options:

Choose the correct nuclear process from the below options:
$ [ p : \text{proton}, n : \text{neutron}, e^- : \text{electron}, e^+ : \text{positron}, \nu : \text{neutrino}, \bar{\nu} : \text{antineutrino} ] $

The torque due to the force $ \left( 2\hat{i} + \hat{j} + 2\hat{k} \right) $ about the origin, acting on a particle whose position vector is $ \hat{i} + \hat{j} + \hat{k} $, would be:

A small rigid spherical ball of mass $ M $ is dropped in a long vertical tube containing glycerine. The velocity of the ball becomes constant after some time. If the density of glycerine is half of the density of the ball, then the viscous force acting on the ball will be (consider $ g $ as acceleration due to gravity):

Consider a circular disc of radius 20 cm with center located at the origin. A circular hole of radius 5 cm is cut from this disc in such a way that the edge of the hole touches the edge of the disc. The distance of the center of mass of the residual or remaining disc from the origin will be:

The center of mass of a thin rectangular plate (fig - x) with sides of length $ a $ and $ b $, whose mass per unit area ($ \sigma $) varies as $ \sigma = \sigma_0 \frac{x}{ab} $ (where $ \sigma_0 $ is a constant), would be

Two polarisers $ P_1 $ and $ P_2 $ are placed in such a way that the intensity of the transmitted light will be zero. A third polariser $ P_3 $ is inserted in between $ P_1 $ and $ P_2 $, at the particular angle between $ P_1 $ and $ P_2 $. The transmitted intensity of the light passing the through all three polarisers is maximum. The angle between the polarisers $ P_2 $ and $ P_3 $ is:

A solid steel ball of diameter 3.6 mm acquired terminal velocity $ 2.45 \times 10^{-2} $ m/s while falling under gravity through an oil of density $ 925 \, \text{kg m}^{-3} $. Take density of steel as $ 7825 \, \text{kg m}^{-3} $ and $ g $ as $ 9.8 \, \text{m/s}^2 $. The viscosity of the oil in SI unit is

The temperature of a body in air falls from $ 40^\circ \text{C} $ to $ 24^\circ \text{C} $ in 4 minutes. The temperature of the air is $ 16^\circ \text{C} $. The temperature of the body in the next 4 minutes will be:

The frequency of revolution of the electron in Bohr’s orbit varies with $ n $, the principal quantum number as:

A small uncharged conducting sphere is placed in contact with an identical sphere but having $ 4 \times 10^{-6} \, \text{C} $ charge and then removed to a distance such that the force of repulsion between them is $ 9 \times 10^{-3} \, \text{N} $. The distance between them is (Take $ \frac{1}{4\pi \epsilon_0} = 9 \times 10^9 $ in SI units):

The moment of inertia of a uniform rod of mass $ m $ and length $ l $ is $ \alpha $ when rotated about an axis passing through the centre and perpendicular to the length. If the rod is broken into equal halves and arranged as shown, then the moment of inertia about the given axis is:

For a nucleus of mass number $A$ and radius $R$, mass density $\rho$. Then choose the correct option.

A circular disk of radius $ R $ meter and mass $ M $ kg is rotating around the axis perpendicular to the disk. An external torque is applied to the disk such that $ \theta(t) = 5t^2 - 8t $, where $ \theta(t) $ is the angular position of the rotating disk as a function of time $ t $. How much power is delivered by the applied torque, when $ t = 2 $ s?

Which of the following quantity has the same dimensions as $ \sqrt{\frac{\mu_0}{\epsilon_0}} $?

A force $ \mathbf{F} = 2\hat{i} + b\hat{j} + \hat{k} $ is applied on a particle and it undergoes a displacement $ \mathbf{r} = \hat{i} - 2\hat{j} - \hat{k} $. What will be the value of $ b $, if the work done on the particle is zero?

The amplitude and phase of a wave that is formed by the superposition of two harmonic travelling waves, $ y_1 (x, t) = 4 \sin(kx - \omega t) $ and $ y_2 (x, t) = 2 \sin(kx - \omega t + \frac{2\pi}{3}) $, are: (Take the angular frequency of initial waves same as $ \omega $)

Find the dimension of $ \frac{E}{B} $ where, E represents electric field and B represents magnetic field.

In a sound wave, the displacement of the air particles follows the equation $ y = A \cos(kx - \omega t) $. What is the wave velocity?

$ x $ is a peptide which is hydrolyzed to 2 amino acids $ y $ and $ z $. $ y $ when reacted with HNO$_2$ gives lactic acid. $ z $ when heated gives a cyclic structure as below: