List of top Physics Questions asked in JEE Main

Figure shows two charges q₁ and –q₂ placed on the x-axis as shown. If electric field at p is along x-direction, find \(\frac{q_1}{q_2}\)

The ratio of molar heat capacity at constant volume of one mole monoatomic gas to the one mole diatomic gas is given as a/b, where a and b are co-prime number, then find (a + b)

In a diffraction pattern of a monochromatic light of wavelength 6000 pm, the slit width is 3 mm. If the angular position of 2nd minima is N x 10^-6 rad, find N.

Three particles having different masses have the same momentum. Find the ratio of their kinetic energy. (m₁ = 400 gm,m₂ = 1.2 kg,m³ = 1.6 kg)

The diameter of a sphere having mass 8.635 gm is measured by a vernier scale. 10 divisions of vernier scale coincide with 9 divisions of main scale and main scale division is 1 mm. If the reading of the main scale is 2 cm & 2nd division of vernier coincide with a main scale division, the density of the sphere is

A solenoid of 10 turns cross section area 36 cm² and of resistance 10 mΩ is placed in a magnetic field which is varying at a constant rate of 0.5 T/sec. Find power of heat dissipation.

An electromagnetic radiation of intensity 360 W /cm² is incident normally on a non-reflecting surface having area A. Average force on the surface is found to be 2.4 x 10^-4 N. Find the value of A.

In a series LCR Circuit, the value of resistance as well as (X_L - X_C) is halved, then the new current amplitude (I₂) will satisfy: (I₁ is old current amplitude)

The correct expression for Bernoulli's theorem is (the symbols have their usual meaning)

Find the ratio of energy stored in the two given capacitor systems.

A car of mass 800 kg is moving in a circular path of radius 300 m on a banked road with an angle 30°. Coefficient of friction between the car and road is 0.2. Find the maximum safe speed (to the nearest integer in m/s) with which the car can travel. (Take √3 = 1.7)

For a device, power consumed = 110 W and voltage supplied is 220 V. The number of electrons that flow in 1 is \(\frac{x}{4}\) × 10¹⁷ . Find x.

Find net kinetic energy (maximum possible) associated with 20 diatomic molecules (Here k_B is Boltzmann constant and T is absolute temperature of diatomic gas).

An ammeter consisting of 240 Ω galvanometer and 10 Ω shunt resistance is connected in circuit as shown. Reading of ammeter is

Find the longest wavelength of the Paschen series for hydrogen atom. (Rydberg constant = 10⁷ /m)

The weight of an object measured on the surface of earth is 300 N. What will be the weight of the same object at depth R/4 inside the earth? (Given R = Radius of earth)

A ball is projected vertically upwards from a building. The time taken to reach ground is T₁. Another ball is projected downwards from the same building, with the same speed. The time taken to reach ground is T₂. If a third ball is released from the same building, the time taken to reach the ground is

If the kinetic energy of a block of mass m becomes 36 times by keeping its mass constant, by what percentage will the momentum increase?

A tree branch holds a weight of 200 N by a uniform chain of mass 10 kg. The force applied by branch to hold this weight is ______ (Take g = 10 m/s² )

There are two fixed charged spheres P and Q repelling each other with a force of 16 N. A third neutral sphere is placed between the charged spheres. The new force between the spheres is _________ (assuming all the spheres are insulating)

A metallic rod of length 4 m is rotating about perpendicular bisector of the rod with angular velocity of 2 rad/s in presence of transverse magnetic field of 0.5 T. Potential difference developed across ends of rod is

Instantaneous current in a circuit is \(i(t)=[6+\sqrt54sin(2\pi + \pi/3)]\) A RMS value of current is

Angular momentum of an electron in an orbit of radius R of a hydrogen atom is directly proportional to

Shortest wavelength in Lyman series has wavelength of 915 À. Longest wavelength of Balmer series has a value of ?

A solid sphere is rolling without slipping. Find the ratio of rotational kinetic energy to total kinetic energy of sphere.