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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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 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:
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 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:
A particle moving in circular path has centripetal acceleration a_c and tangential acceleration a_t. The magnitude of total acceleration is:
A pendulum with length L is displaced to make angle θ with vertical and released. The velocity at lowest point (for small angles) is approximately:
The potential energy of a particle is U = x² - 2x. The force on particle is:
Two objects of masses m₁ = 2 kg and m₂ = 3 kg are connected by a light string over a pulley. If released from rest, what is their acceleration? (g = 10 m/s²)
A 2 kg mass attached to a spring (k = 200 N/m) oscillates on a frictionless surface. What is the period of oscillation?
A 3 kg ball is thrown horizontally from a height of 20 m with initial velocity 15 m/s. What is its horizontal displacement when it hits the ground? (g = 10 m/s²)
Two balls of equal mass collide elastically in a 1D head-on collision. Ball A has velocity 5 m/s and Ball B is at rest. After collision, what is Ball A's velocity?
A car rounds a horizontal curve of radius 100 m at 20 m/s. What minimum coefficient of friction is needed to prevent skidding? (g = 10 m/s²)