NEET UG Work, Energy and Power — practice questions
19 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Work, Energy and Power in the app →A porter carries a $20$ kg bag horizontally for $50$ m at constant height. The work done by him on the bag agaA cricket ball of mass $0.15$ kg moves at $20$ m/s. Its kinetic energy is:A delivery boy raises a $10$ kg sack to a $2$ m shelf in $4$ s. The power expended (using $g = 10$ m/s$^2$) isA carrom coin elastically collides head-on with another identical coin at rest. After collision:The work done by a constant force F on a body that undergoes displacement d (both vectors) is:The SI unit of work and energy is:The work–energy theorem states that the net work done on a body equals:Kinetic energy of a body of mass m moving with speed v is:A body of mass 5 kg is raised vertically by 4 m at constant velocity (g = 10 m s⁻²). The work done against graA force of 10 N acts on a 2 kg body at rest. After 5 s, the kinetic energy of the body is:The gravitational potential energy of a body of mass m at height h near the Earth's surface (taking surface asA body is dropped from height h. Just before it hits the ground, its speed is:A 60 W bulb burns for 2 hours. The total energy consumed in kWh is:A pump lifts water at a rate of 3000 kg per minute through 30 m (g = 10 m s⁻²). The minimum power of the pump Two bodies of masses m₁ and m₂ have equal kinetic energies. The ratio of their momenta p₁/p₂ is:In a one-dimensional elastic collision between a moving body and an equal-mass stationary body, the moving bodA spring with spring constant k is compressed by x. The elastic potential energy stored is:In a perfectly inelastic collision between two bodies:A particle moves under a force F = −k x. The motion is: