List of top Physics Questions asked in JEE Main

For the given logic gate, find the output function.
If a projectile is projected with speed \(v\) at an angle \(60^\circ\) with the horizontal, find the ratio of speed at the highest point (\(v_B\)) to the speed at the final point (\(v_C\)).
For the given set of measurements, find the relative error. \[ 20.00,\ 19.75,\ 18.25,\ 17.01 \]
Find out the correct energy for the ground state or energy transition. (Symbols have usual meaning and \(n \to m\) gives the transition)
An object is being dropped from a height \(h\) above the ground. Apart from the force of gravity, an additional drag force \(F=-kv\) acts on the object. Find the correct graph of velocity \(v\) versus time \(t\).
There are three long parallel wires in a plane as shown. Find the force on \(15\) cm of length of the middle wire.
Which of the following material has bigger Young's modulus?
A particle moves along the \(x\)-axis and has its displacement \(x\) varying with time \(t\) according to the equation \[ x = c_0 (t^2 - 2) + c(t - 2)^2 \] where \(c_0\) and \(c\) are constants of appropriate dimensions. Which of the following statements is correct?
Given below are two statements:
Statement (I): The dimensions of Planck's constant and angular momentum are same.
Statement (II): In Bohr's model, electrons revolve around the nucleus only in those orbits for which angular momentum is an integral multiple of Planck's constant.
In the light of the above statements, choose the most appropriate answer from the options given below:
A block of mass \( m \) is at rest w.r.t. a hollow cylinder which is rotating with angular speed \( \omega \), radius of the cylinder is \( R \). Find the minimum coefficient of friction between the block and the cylinder.
RMS speed for \( \mathrm{H_2} \) and \( \mathrm{O_2} \) are same. If temperature of \( \mathrm{O_2} \) gas is \( 23^\circ\text{C} \), find the temperature of \( \mathrm{H_2} \) gas.
For the given circuit arrangement, find the charge on the capacitor in steady state.
An electron in a hydrogen-like atom has energy equal to \( -0.04 E_0 \), where \( E_0 \) is the magnitude of energy of this electron in ground state in eV. If the angular momentum of this electron is \( L \), then the value of \( \frac{2 \pi L}{h} \) is (where \( h \) is Planck's constant).
Find magnetic field at point ‘O’ in the given figure.
Two physical quantities \( x \) and \( y \) have measured values 23.01 and 37.3 respectively. Then the value of \( x + y \) is:
Two cars moving parallelly to each other with the velocities shown. Initial separation between cars is \( r = 10 \, \text{m} \). Find angular momentum of car A w.r.t. car B.
A boat crosses a river, 200 m wide, in minimum possible time. If the velocity of the river is 5 m/s and the velocity of the boat in still water is 10 m/s, then find the time taken to cross the river and displacement of the boat.
In the diagram given below, pulley is a ring of mass \( M \) and radius \( R \) fitted with two rods each of mass \( m \) and length \( 2R \) along the diameter such that if the pulley rotates, the rods also rotate with the same angular velocity.
Find the magnitude of the acceleration of \( m \) when the system is released.
What will be the ratio of the wavelength of the 3rd line of the Paschen Series to the 2nd line of the Balmer series of H-atom?
Energy of first line of Lyman series - A Energy of second line of Balmer series - B Energy of first line of Balmer series - C Energy of second line of Lyman series - D What will be the correct decreasing order of energies of photons?
Two discs having the same moment of inertia about their axis. Thickness is \( t_1 \) and \( t_2 \), and they have the same density. If \( \frac{R_1}{R_2} = \frac{1}{2} \), then find \( \frac{t_1}{t_2} \).
A particle is projected at an angle of \(60^\circ\) with the ground. When the projectile makes an angle \(45^\circ\) with the horizontal, its speed becomes \(20\,\text{m s}^{-1}\). Then the initial velocity is:
An \( \alpha \)-particle having kinetic energy 7.7 MeV is approaching a fixed gold nucleus (atomic number is 79). Find the distance of closest approach.
An ideal solenoid is kept with its axis vertical. Current \( I_0 \) is flowing in the solenoid. A charge \( Q \) is thrown downward inside the solenoid. If acceleration of the charge particle is \( a \), then
Find the volume flow rate in the venturi meter given below in which water is flowing.