JEE MAIN · PHYSICS · WORK, ENERGY AND POWER

JEE Main Work, Energy and Power Questions & Solutions

15 solved questions on Work, Energy and Power, ranging from easy to JEE-Advanced-flavour hard. Click any to see the full solution.

10Easy
5Medium
0Hard
Drill Work, Energy and Power in the app →

All 15 questions

  1. Easy MCQ +4 / -1

    The coefficient of restitution for a perfectly elastic collision is:

    View solution →
  2. Medium MCQ +4 / -1

    Two bodies of equal mass undergo a one-dimensional elastic collision, with one initially at rest. After the collision:

    View solution →
  3. Easy MCQ +4 / -1

    In a perfectly inelastic collision, which quantity is conserved?

    View solution →
  4. Medium MCQ +4 / -1

    Instantaneous power in terms of force $\vec F$ and velocity $\vec v$ is:

    View solution →
  5. Easy MCQ +4 / -1

    A man does 1000 J of work in 10 s. His average power is:

    View solution →
  6. Easy MCQ +4 / -1

    The SI unit of power is:

    View solution →
  7. Easy TRUE_FALSE +2 / -1

    In the presence of friction, mechanical energy alone is not conserved, although total energy remains conserved.

    View solution →
  8. Medium MCQ +4 / -1

    A simple pendulum of length $L$ is released from rest at height $h$ above the mean position. Its speed at the lowest point is:

    View solution →
  9. Easy MCQ +4 / -1

    A body of mass 2 kg is dropped from a height of 20 m. What is its kinetic energy just before hitting the ground? (Take $g = 10$ m/s²)

    View solution →
  10. Medium MCQ +4 / -1

    A 2 kg body is held at a height of 10 m above the ground. Its gravitational potential energy is (take $g = 10$ m/s², reference at ground):

    View solution →
  11. Easy MCQ +4 / -1

    The kinetic energy of a body of mass $m$ moving with velocity $v$ is:

    View solution →
  12. Easy MCQ +4 / -1

    A spring with spring constant 400 N/m is compressed by 0.1 m. The energy stored in the spring is:

    View solution →
  13. Medium MCQ +4 / -1

    A force $\vec F = (3\hat i + 4\hat j)$ N acts on a body producing displacement $\vec s = (2\hat i + 3\hat j)$ m. The work done is:

    View solution →
  14. Easy MCQ +4 / -1

    The SI unit of work is:

    View solution →
  15. Easy MCQ +4 / -1

    The work done by a constant force $F$ producing displacement $s$ at an angle $\theta$ between them is:

    View solution →

Drill 25 more like these. Every day. Free.

PrepWiser turns these solved questions into a daily practice loop. Chapter-wise drills, full mocks, AI doubt chat. No auto-renew.

Start free →