List of top Physics Questions

The voltage $ V_o $ in the network shown is

The dimensions of the coefficient of self-inductance are:

A particle is moving in a straight line. The variation of position $ x $ as a function of time $ t $ is given as:
$ x = t^3 - 6t^2 + 20t + 15 $.
The velocity of the body when its acceleration becomes zero is:

A rigid body rotates about a fixed axis with variable angular velocity $ \omega = \alpha - \beta t $ at time $ t $, where $ \alpha, \beta $ are constants. The angle through which it rotates before it stops is:

The range of a projectile projected at an angle of $ 15^\circ $ with the horizontal is $ 50 $ m. If the projectile is projected with the same velocity at an angle of $ 45^\circ $, then its range will be:

A particle of mass $ m $ is projected with a velocity $ u $ making an angle of $ 30^\circ $ with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height $ h $ is:

A body is thrown with a velocity of $ 9.8 $ m/s making an angle of $ 30^\circ $ with the horizontal. It will hit the ground after a time:

A series LCR circuit is shown in the figure. Where the inductance of 10 H, capacitance 40 \muF and resistance 60 Ω are connected to a variable frequency 240 V source. The current at resonating frequency is.

A light string passing over a smooth light pulley connects two blocks of masses $ m_1 $ and $ m_2 $ (where $ m_2>m_1 $). If the acceleration of the system is $ \frac{g}{\sqrt{2}} $, then the ratio of the masses $ \frac{m_1}{m_2} $ is:

A person of mass $ 60 $ kg is inside a lift of mass $ 940 $ kg. The lift starts moving upwards with an acceleration of $ 1.0 $ m/s$ ^2 $. If $ g = 10 $ m/s$ ^2 $, the tension in the supporting cable is:

A force of $ F = 0.5 $ N is applied on the lower block as shown in the figure. The work done by the lower block on the upper block for a displacement of 3 m of the upper block with respect to the ground is (Take, $ g = 10 $ m/s$ ^2 $):

A pendulum of mass $ 1 $ kg and length $ l = 1 $ m is released from rest at an angle $ \theta = 60^\circ $. The power delivered by all the forces acting on the bob at angle $ \theta = 30^\circ $ will be (Take, $ g = 10 $ m/s$ ^2 $):

An ideal massless spring $ S $ can be compressed $ 1 $ m by a force of $ 100 $ N in equilibrium. The same spring is placed at the bottom of a frictionless inclined plane inclined at $ 30^\circ $ to the horizontal. A $ 10 $ kg block $ M $ is released from rest at the top of the incline and is brought to rest momentarily after compressing the spring by $ 2 $ m. If $ g = 10 $ m/s$ ^2 $, what is the speed of the mass just before it touches the spring?

In photoelectric experiment energy of 2.48 eV irradiates a photo sensitive material. The stopping potential was measured to be 0.5 V. Work function of the photo sensitive material is :

A particle of mass $ 2 $ kg is on a smooth horizontal table and moves in a circular path of radius $ 0.6 $ m. The height of the table from the ground is $ 0.8 $ m. If the angular speed of the particle is $ 12 $ rad/s, the magnitude of its angular momentum about a point on the ground right under the center of the circle is:

The minimum deviation produced by a hollow prism filled with a certain liquid is found to be 30$^\circ$. The light ray is also found to be refracted at an angle of 30$^\circ$. Then the refractive index of the liquid is

A solid cylinder rolls down an inclined plane without slipping. If the translational kinetic energy of the cylinder is 140 J, the total kinetic energy of the cylinder is

A solid cylinder of mass 2 kg and radius 0.2 m is rotating about its own axis without friction with angular velocity 5 rad/s. A particle of mass 1 kg moving with a velocity of 5 m/s strikes the cylinder and sticks to it as shown in figure.

The angular velocity of the system after the particle sticks to it will be:

A particle starts from rest and moves in a straight line. It travels a distance $2L$ with uniform acceleration and then moves with a constant velocity a further distance of $L$. Finally, it comes to rest after moving a distance of $3L$ under uniform retardation. Then the ratio of average speed to the maximum speed $ \left( \frac{V_{avg}}{V_{m}} \right) $ of the particle is:

A spherical ball of mass $ 20 $ kg is stationary at the top of a hill of height $ 100 $ m. It rolls down a smooth surface to the ground, then climbs up another hill of height $ 30 $ m and finally rolls down to a horizontal base at a height of $ 20 $ m above the ground. The velocity attained by the ball is:

Two bodies of mass $ 1 $ kg and $ 3 $ kg have position vectors $ \hat{i} + 2\hat{j} + \hat{k} $ and $ -3\hat{i} - 2\hat{j} + \hat{k} $ respectively. The magnitude of the position vector of the center of mass of this system will be similar to the magnitude of which vector?

The moment of inertia of a cube of mass $ m $ and side $ a $ about one of its edges is equal to:

A body which is initially at rest at a height $ R $ above the surface of the Earth of radius $ R $, falls freely towards the Earth. The velocity on reaching the surface of the Earth is:

The distance between the Sun and Earth is $ R $. The duration of a year if the distance between the Sun and Earth becomes $ 3R $ will be:

For a particle inside a uniform spherical shell, the gravitational force on the particle is: