Work, Energy and Power is a Class 11 Physics chapter that carries about 3.9% of the Physics questions in NEET. Practise it with 45 questions covering 2 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Work, Energy and Power had 13 questions, about 1.0 a year. The most in one paper was 2, in NEET 2019.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 1 |
| NEET 2025 | 1 |
| NEET 2024 | 0 |
| NEET 2023 | 2 |
| NEET 2022 | 1 |
| NEET 2021 | 2 |
| NEET 2020 | 0 |
| NEET 2019 | 2 |
| NEET 2018 | 1 |
| NEET 2017 | 1 |
| NEET 2016 | 1 |
| Re-AIPMT 2015 | 1 |
| AIPMT 2014 | 0 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
A 1 kg ball is dropped from a height of 5 m. Taking g = 10 m/s², its kinetic energy when it is 2 m above the ground is:
Answer: C. 30 J
Why: The energy lost in potential energy is mg × 3 = 30 J, and it becomes kinetic.
A force of 10 N acts on a body of mass 2 kg, displacing it through 5 m in the direction of the force. The change in its kinetic energy is:
Answer: B. 50 J
Why: By the work–energy theorem, ΔK = F d = 50 J.
The work done by the force of gravity on a stone thrown upward is:
Answer: C. negative during ascent and positive during descent
Why: Gravity opposes the motion during the ascent and acts along it during the descent.
A motor takes 1000 W from the supply and delivers 800 W of mechanical power. Its efficiency is:
Answer: B. 80%
Why: Efficiency = output/input = 800/1000.
A bead must start from rest at a height of at least how many times the radius R above the bottom of a frictionless loop to complete a vertical circle of radius R?
Answer: D. 2.5 R
Why: At the top, v² ≥ gR, and energy conservation gives g h = g(2R) + ½gR, so h = 2.5 R.
If the kinetic energy of a body is doubled, its momentum becomes:
Answer: B. √2 times
Why: p = √(2mE), so doubling E multiplies p by √2.
A pendulum bob is released from rest at a height of 0.8 m above its lowest position. Taking g = 10 m/s², its speed at the lowest point is:
Answer: A. 4 m/s
Why: ½v² = gh gives v = √(2 × 10 × 0.8) = 4 m/s.
An engine develops 10 kW of power. The work it does in 5 minutes is:
Answer: A. 3 × 10⁶ J
Why: W = Pt = 10 000 × 300 = 3 × 10⁶ J.
Work, Energy and Power carries about 3.9% of the Physics questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 13 times, about 1.0 questions a year.
Work, Energy and Power is a Class 11 Physics chapter in the NCERT syllabus.
NeetVictory has 45 practice questions on Work, Energy and Power, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory