Physics · JEE

Important Questions: Work, Energy and Power for JEE

82+ syllabus-aligned questions available

Quick answer

The most important Work, Energy and Power questions for JEE cover conceptual traps, standard results, and numerical patterns from Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power, The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces, Motion in a vertical circle, Elastic and inelastic collisions in one and two dimensions. Goodmarks provides 80+ high-yield MCQs with full solutions.

Focus on what matters most. These important Work, Energy and Power questions cover high-weightage concepts from Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power, The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces, Motion in a vertical circle, Elastic and inelastic collisions in one and two dimensions — the topics JEE repeats every year.

JEE Formula Sheet

6+ important formulas for Work, Energy and Power

View formula sheet

Subtopics in Work, Energy and Power

View Work, Energy and Power formula sheet — 6+ JEE formulas

Free sample questions

Attempt 8 free MCQs for Work, Energy and Power. Unlock 74+ more with Pro.

Unlock full bank

Q1PhysicsUnit 4: Work, Energy and Power

A cricket ball of mass

150 g

moving with a speed of

126 k m / h

hits at the middle of the bat, held firmly at its position by the batsman. The ball moves straight back to the bowler after hitting the bat. Assuming that collision between ball and bat is completely elastic and the two remain in constant for

0.001 s,

the force that the batsman had to apply to hold the bat firmly at its place would be:

Q2PhysicsUnit 4: Work, Energy and Power

Which one of the following statement is false?

Q3PhysicsUnit 4: Work, Energy and Power

A body of mass 5 kg has momentum of

10 \mathrm{kg} \mathrm{m} / \mathrm{sec} .

When a force of

0.2 \mathrm{N}

is applied on it for 10 sec, the change in its kinetic energy is:

Q4PhysicsUnit 4: Work, Energy and Power

The graph between the resistive force acting on a body and the position of the body travelling in a straight line is shown in the figure. The mass of the body is

25 \mathrm{kg}

and initial velocity is 2 m/s.When the distance covered by the bodyi

s 4 \mathrm{m},

its kinetic energy would be

Q5PhysicsUnit 4: Work, Energy and Power

\mathbf{A}

3 k g

object has initial velocity

(6 \hat{i}-

\mathbf{2} \hat{\boldsymbol{j}}) \boldsymbol{m} / \boldsymbol{s} .

The total work done on the object if its velocity changes to

(8 \hat{i}+

4 \hat{j}) m / s

is :

Q6PhysicsUnit 4: Work, Energy and Power

A wire suspended vertically from one of its ends is stretched by attaching a weight of

200 \mathrm{N}

to the lower end. The weight stretches the wire by 1 mm. Then the energy stored in the wire is

Q7PhysicsUnit 4: Work, Energy and Power

Potential energy is classified into which two energy?

Q8PhysicsUnit 4: Work, Energy and Power

Which of the following forms of energy is released or absorbed in most chemical reactions?

Want unlimited Work, Energy and Power practice?

Pro unlocks the full question bank, topic filters, and attempt history.

Get started free View Pro plans

Frequently asked questions

What makes a Work, Energy and Power question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Work, Energy and Power are high-weightage?

Key areas include Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power, The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces, Motion in a vertical circle, Elastic and inelastic collisions in one and two dimensions. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.