JEE Physics - MCQ Practice Questions

The coefficient of static friction between a block and surface is 0.5. The maximum angle of incline at which the block remains stationary is approximately:

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 uniform ladder of mass M leans against a frictionless wall at angle 60° with ground. The minimum coefficient of friction at ground 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: