JEE Physics - MCQ Practice Questions
Physics is where JEE ranks are usually won or lost, since a single conceptual slip changes the whole answer. Questions here span mechanics, rotational motion, thermodynamics, waves and oscillations, electrostatics, current electricity, magnetism, optics, and modern physics. Numerical problems carry full derivations so you can see which step you skipped, not just which option was right.
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Two objects of equal mass collide elastically and exchange velocities. This is possible only if:
A stone is dropped from height h. If air resistance is ignored, what fraction of its total energy is kinetic at height h/2?
A projectile is launched at 45° with initial velocity 20 m/s. Taking g = 10 m/s², the range is:
A force of 10 N acts on a mass for 5 seconds, changing its momentum by:
Two blocks A (2 kg) and B (3 kg) are connected by a string on a frictionless surface. A 10 N force pulls the system. The tension in the string between A and B is:
A uniform rod of length L is suspended vertically from one end. Its center of mass falls from height L/2 to height 0 when released. The velocity of COM when it reaches bottom is:
A disc of radius 0.5 m rolls without slipping on a horizontal surface with angular velocity 4 rad/s. The velocity of the center of mass is:
A body experiences two perpendicular forces of 3 N and 4 N. The resultant acceleration is 2 m/s². The mass is:
A particle moves in a vertical circle of radius r. At the highest point, the minimum speed needed to maintain contact is:
Two identical springs with spring constant k are connected in series. The effective spring constant is:
A 2 kg block compresses a spring by 0.1 m and is released. If spring constant is 1000 N/m, the maximum velocity attained is:
A gyroscope has angular momentum L. If a torque τ is applied perpendicular to L, the angular velocity of precession is:
A man of mass 60 kg stands on a weighing scale in an elevator moving downward with acceleration 2 m/s². The scale reading is (g = 10 m/s²):
Two masses m₁ = 3 kg and m₂ = 2 kg are connected by a light string over a pulley. When released, the acceleration is:
A ball of mass 0.5 kg moving at 10 m/s collides with a stationary ball of equal mass. If collision is perfectly elastic, the velocities after collision are:
A rotating wheel has moment of inertia 2 kg·m² and angular acceleration 3 rad/s². The torque required is:
A planet has mass M and radius R. The escape velocity from its surface is v_e. If a new planet has mass 8M and radius 2R, its escape velocity is:
A block slides down an inclined plane of angle θ and length L. If friction coefficient is μ, the velocity at bottom is:
A wheel rotating at 100 rpm is brought to rest by applying brakes for 10 seconds. The angular deceleration is:
A particle undergoes simple harmonic motion with amplitude A and period T. The maximum velocity is: