Top Strategies to Ace JEE Main Work, Energy, and Power Mock Tests
Work, Energy, and Power is a vital chapter in JEE Physics, focusing on the principles of energy conservation, the work-energy theorem, and mechanical power. Mastery of these concepts is crucial for solving a wide variety of Physics problems efficiently. Take this dedicated mock test to reinforce your understanding and boost your confidence for JEE Main & Advanced 2025!
Mock Test Instructions for the Work Energy And Power (Mock Test 2):
- 20 questions from Work, Energy, and Power
- Time limit: 20 minutes
- Single correct answer per question
- Correct answers appear in bold green after submission
How Can JEE Mock Tests Help You Master Work, Energy, and Power?
- Identify your weak areas in concepts like work done, energy conservation, and power calculation.
- Increase efficiency in solving numerical problems on kinetic and potential energy using time-bound mock tests.
- Reinforce key concepts such as conservative vs. non-conservative forces through repeated practice.
- Improve understanding of the work-energy theorem by solving exam-style MCQs.
- Track your progress with instant feedback and optimize your JEE preparation for this important Physics chapter.
Boost Your JEE Score by Practicing Expert-Designed Mock Tests on Work, Energy & Power
- Attempt a wide range of JEE questions mapped to recent exam trends in Work, Energy, and Power.
- Sharpen problem-solving skills through exposure to PYQs and new pattern MCQs on mechanical energy and power.
- Develop better exam strategies with immediate explanations after each mock test attempt.
- Master application-based and conceptual questions under a real-time environment.
- Use topic-specific performance analytics to target and revise your weaker subtopics before the exam.
Subject-Wise Excellence: JEE Main Mock Test Links
| S.No. | Subject-Specific JEE Main Online Mock Tests |
|---|---|
| 1 | Online FREE Mock Test for JEE Main Chemistry |
| 2 | Online FREE Mock Test for JEE Main Maths |
| 3 | Online FREE Mock Test for JEE Main Physics |
Important Study Materials Links for JEE Exams
FAQs on JEE Main Mock Test 2025-26: Work, Energy, and Power Practice
1. What is work in physics?
In physics, work is defined as the product of force and displacement in the direction of the force. It is mathematically expressed as W = F × d × cos(θ), where F is the force applied, d is the displacement, and θ is the angle between the force and displacement direction.
2. State the SI unit of work, energy, and power.
The SI unit of work and energy is the Joule (J), while the SI unit of power is the Watt (W).
3. What is meant by kinetic energy and potential energy?
Kinetic energy is the energy an object possesses due to its motion, given by KE = ½ mv2, where m is mass and v is velocity. Potential energy is stored energy due to an object's position or state, such as gravitational potential energy, calculated by PE = mgh, where h is height.
4. State and explain the law of conservation of energy.
The law of conservation of energy states that energy can neither be created nor destroyed, only transformed from one form to another. The total energy of an isolated system remains constant throughout all processes.
5. What are the differences between work and power?
Work measures the energy transfer when a force moves an object, while power measures the rate at which work is done or energy is transferred. Work is scalar and measured in Joules, while power is measured in Watts.
6. What is mechanical energy? State its types with examples.
Mechanical energy is the sum of kinetic energy and potential energy in a body. For example:
- Kinetic energy: A moving car.
- Potential energy: Water stored at a height in a tank.
7. What is the formula for work done when force is at an angle?
When force is applied at an angle θ to the displacement, the work done is given by W = F × d × cos(θ).
8. How can you increase the power output of a machine?
To increase the power output of a machine, you can either do more work in the same time or do the same work in less time.
9. Give two practical examples of work being done.
Example 1: Lifting a bag from the ground to a table involves doing work against gravity.
Example 2: Pushing a trolley across a mall floor does work against friction.
10. What are the units for measuring energy in the CGS system?
In the CGS system, energy and work are measured in erg, and power is measured in erg/s.
11. How is the concept of work, energy and power useful in daily life?
Understanding work, energy, and power helps in optimizing tasks like using electrical appliances efficiently, choosing transportation methods by energy consumption, and understanding the energy needs for sports and exercise.
12. What are some common mistakes when calculating work, energy, and power in physics problems?
Common mistakes include:
- Ignoring the direction of force relative to displacement
- Using incorrect formula based on the scenario
- Mixing up units (e.g., kilograms instead of grams in CGS/ SI systems)
- Not converting time units properly while calculating power
