Physics · JEE

Work, Energy and Power Revision for JEE

82+ syllabus-aligned questions available

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Revise Work, Energy and Power by covering every subtopic once, drilling formulas, then solving 80+ timed MCQs with full solutions.

Use this Work, Energy and Power revision checklist before mocks and the final exam. Reinforce concepts with 80+ syllabus-aligned MCQs on Goodmarks.

Revision checklist

1.Work by variable force, work-energy theorem
2.Conservative vs non-conservative forces
3.Potential energy of spring, vertical circle motion
4.Elastic and inelastic collisions in 1D and 2D
5.Revise Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power with 10 MCQs
6.Revise The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces with 10 MCQs
7.Revise Motion in a vertical circle with 10 MCQs
8.Revise Elastic and inelastic collisions in one and two dimensions with 10 MCQs

JEE Formula Sheet

6+ important formulas for Work, Energy and Power

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Subtopics in Work, Energy and Power

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

Free sample questions

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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?

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Frequently asked questions

How should I revise Work, Energy and Power before JEE?

Follow the checklist on this page, revise formulas daily, and attempt mixed MCQs every 2–3 days.