Physics · JEE

Work, Energy and Power Short Tricks for JEE

82+ syllabus-aligned questions available

Quick answer

Short tricks for Work, Energy and Power work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.

Use these Work, Energy and Power shortcuts to save time in JEE Physics papers — then validate speed with 80+ MCQs on Goodmarks.

Short tricks for speed

Work, Energy and Power focus drill
Solve 15 mixed MCQs for Work, Energy and Power, review every explanation, and note formulas you hesitated on.
Dimensional check first
Before solving, verify each term has consistent SI dimensions — eliminates wrong options quickly in JEE MCQs.
Limiting cases
Substitute extreme values (t→0, m→∞, θ→0) to sanity-check your final expression.

JEE Formula Sheet

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Subtopics in Work, Energy and Power

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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

Are short tricks enough for Work, Energy and Power in JEE?

No — tricks complement concepts. Master the theory first, then use shortcuts in timed MCQ practice.