List of top Physics Questions asked in JEE Main

A bullet strikes a stationary ball kept at a height as shown. After collision, range of bullet is 120 m and that of ball is 30 m. Find initial speed of bullet. Collision is along horizontal direction.
(Take g = 10 m/s²)

A particle moving in unidirectional motion travels half of the total distance with a constant speed of 15 m/s. Now first half of the journey time it travels at 10 m/s and second half of the remaining journey time it travels at 5 m/s. Average speed of the particle is

Momentum-time graph of an object moving along a straight line is as shown in figure. If (P₂ – P₁) < P₁ and (t₂ – t₁) = t₁ < (t₃ – t₂) then at which points among A, B and C the magnitude of force experienced by the object is maximum and minimum respectively.

The heat passing through the cross-section of a conductor, varies with time ‘t’ as $Q(t) = αt – βt^2 + γt^3$. ($α, β$ and $γ$ are positive constants.) The minimum heat current through the conductor is

For a system undergoing isothermal process, heat energy is supplied to the system. Choose the option showing correct statements
(a) Internal energy will increase
(b) Internal energy will decrease
(c) Work done by system is positive
(d) Work done by system is negative
(e) Internal energy remains constant

Two conducting solid spheres (A & B) are placed at a very large distance with charge densities and radii as shown:

Choose the option showing the correct relation between Poisson’s ratio (σ), Bulk modulus (B) and modulus of rigidity (G).

If the earth suddenly shrinks to $\frac{1}{ 64}$ th of its original volume with its mass remaining the same, the period of rotation of earth becomes $\frac{24}{ x}$ h. The value of x is .

The de Broglie wavelength of a molecule in a gas at room tem perature (300 K) is λ₁. If the temperature of the gas is increased to 600 K, then the de Broglie wavelength of the same gas molecule becomes

Given below are two statements: one is labeled as Statement (1) and the other is labeled as Statement (2).
Statement (1): Maximum power is dissipated in a circuit containing an inductor, a ca pacitor and a resistor connected in series with an AC source, when resonance occurs
Statement (2): Maximum power is dissipated in a circuit containing pure resistor due to zero phase difference between current and voltage.
In the light of the above statements, choose the correct option:

Find the equivalent capacitance across points A and B in the given electric circuit.

A particle of mass m moving with a velocity v collides with a particle of mass 2m at rest and sticks to it. Velocity of the combined mass equal to?

The range of the projectile projected at an angle of 15° with hor izontal is 50 m. If the projectile is projected with same velocity at an angle of 45° with horizontal, then its range will be

Two different lenses are used in telescope because

The height of the antenna is 98 m. The radius of Earth is 6400 km. The area up to which it will transmit signal is:

If mass, radius of cross-section and height of a cylinder are (0.4+0.01) g, (6+0.03) m and height (8+0.04) m. The maximum percentage error in the measurement of density of cylinder is?

Two projectiles u₁ and u₂, with speed of 40 m/s and 60 m/s respectively are thrown at a certain angle, u₁ with 30^o and u₂ with 60^o, what is the ratio of range?

Two forces of magnitude A and $\frac{A}{2}$ act perpendicular to each other. The magnitude of the resultant force is equal to:

An air bubble having volume 1 cm³ at depth 40 m inside water comes to the surface. What will be the volume of the bubble at the surface?

A block of mass 5 kg starting from rest pulled up on a smooth incline plane making an angle of 30^◦ with horizontal with an affective acceleration of 1 ms⁻². The power delivered by the pulling force at t = 10 s from the starts is W. [use g=10 ms⁻²] (Calculate the nearest integer value)

The logic operations performed by the given digital circuit is equivalent to:

Proton and electron have equal kinetic energy, the ratio of de-Broglie wavelength of proton and electron is $\frac{1}{x}$. Find x. (Mass of proton 1849 times mass of electron)

Potential at the surface of a uniformly charged non-conducting sphere is V. Then the potential at its centre is

In which of the following process, the internal energy of gas remains constant

Two billiard balls of mass $005\, kg$ each moving in opposite directions with $10 \, ms ^{-1}$ collide and rebound with the same speed If the time duration of contact is $t =0005 \, s$, then what is the force exerted on the ball due to each other?