Physics - Work Power Energy
Practise 20 WBJEE previous year questions on Work Power Energy, compiled from papers spanning 2009 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty WBJEE tests.
Work Power Energy has been asked in 13 of the 18 years of WBJEE papers analysed (2009–2026), with 20 questions in all. 40% of them were easy, 50% moderate and 10% tough. Most of its questions came from 2013, with 4 questions that year. In the last three years (2024–2026) it had 3 questions across 3 papers, about 1 per paper.
The chapter's 3 topics are not weighted equally: Energy (14 questions, 70%), Work done (4 questions, 20%), and Power (2 questions, 10%) have been asked the most. Energy has also led over the last five years, with 4 questions. Work done has produced the most tough questions (1).
- 1A body initially at rest and sliding along a frictionless track from a height ' ' (as shown in figure) just completes a vertical circle of d2026Energy
- 2The velocity-time graph for a body of mass 10 kg is shown in the figure. Work done on the body in the first two seconds of motion is2025Energy
- 3The following figure shows the variation of potential energy V(x) of a particle with distance x. The particle has2024Energy
- 4A uniform rope of length \(4 {~m}\) and mass \(0.4 {~kg}\) is held on a frictionless table in such a way that \(0.6 {~m}\) of the rope is ha2023Work done
- 5A train is moving along the tracks at a constant speed \( {u}\). A girl on the train throws a ball of mass \(m\) straight ahead along the di2023Work done
- 6The kinetic energy of a particle moving along -axis varies with its position as shown in the figure. The force acting on the particle at is2022Energy
- 7A block of mass slides with speed on a frictionless table towards another stationary block of mass . A massless spring with spring constant 2021Energy
- 8A body of density is dropped from rest from a height into a liquid of density . Neglecting all dissipative effects, the maximum depth to whi2021Energy
- 9The bob of a swinging seconds pendulum (one whose time period is ) has a small speed at its lowest point. Its height from this lowest point 2020Energy
- 10A body starts from rest, under the action of an engine working at a constant power and moves along a straight line. The displacement s is gi2019Energy
- 11A bullet of mass travelling with a speed hits a block of mass initially at rest and gets embedded in it. The combined system is free to move2013Energy
- 12A particle of mass and charge is released from rest in a region of uniform electric field magnitude . After a time , the distance travelled 2013Energy
- 13A particle of mass and charge , initially at rest, is accelerated by a uniform electric field through a distance and is then allowed to appr2013Energy
- 14A particle is acted upon by a constant power. Then, which of the following physical quantity remains constant?2013Power
- 15When a spring is stretched by , the potential energy stored is . When the spring is stretched by more, the potential energy stored in the sp2012Energy
- 16A cubical vessel of height \(1 {~m}\) is full of water. What is the amount of work done in pumping water out of the vessel? (Take \( {g}=\) 2011Energy
- 17A body of mass \(6 {~kg}\) is acted upon by a force which causes a displacement in it given by \(x= {t^2}{4}\) metre where \(t\) is the time2011Work done
- 18A box is moved along a straight line by a machine delivering constant power. The distance moved by the body in time \( {t}\) is proportional2011Power
- 19If momentum is increased by , then kinetic energy increases by2010Energy
- 20The force acting on a particle moving in a straight line is shown below. What is the work done by the force on the particle in the meter of 2009Work done
Frequently Asked Questions
1.How many questions are available for Work Power Energy?
This chapter includes 20 questions compiled from WBJEE papers spanning 2009 to 2026.
2.Are these questions only from WBJEE, or from other exams too?
These are WBJEE questions specifically for the Work Power Energy chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Work Power Energy an important chapter for WBJEE Physics?
Work Power Energy has appeared in 13 of the 18 years of WBJEE papers covered here, with 20 questions across 13 papers - about 2 per paper it appears in.
4.What is the difficulty level of Work Power Energy questions in WBJEE?
Of the 20 questions analysed for this chapter, 40% are easy, 50% moderate and 10% tough. 2013 had the most, with 4 questions.
5.Which topics in Work Power Energy should I focus on?
These topics have carried the most weightage in Work Power Energy:
- Energy - 14 questions (70%)
- Work done - 4 questions (20%)
- Power - 2 questions (10%)
- Work done has produced the most tough questions (1).
6.Is Work Power Energy's weightage in WBJEE going up or down?
Across all 13 papers analysed, Work Power Energy has averaged about 1.5 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.