MCQs on NEET Physics Unit 4 Work, Energy, and Power

physics mock test for neet

Unit 4 of NEET Physics, focusing on Work, Energy, and Power, delves into fundamental concepts that govern the dynamics of physical systems. Understanding these principles is crucial for aspiring medical professionals aiming to excel in the NEET exam.

In this comprehensive guide, we'll explore NEET Physics Unit 4: Work, Energy, and Power in detail, and provide a set of multiple-choice questions (MCQs) to help you assess your understanding and prepare effectively for the exam. MCQs on NEET Physics Unit 4 Work, Energy, and Power cover all topics and questions with answers that are given in the latest Physics syllabus for the NEET exam.

Syllabus of Physics Unit 4 Work, Energy, and Power

Work done by a constant force and a variable force; kinetic and potential energies. work-energy theorem, power. The potential energy of spring conservation of mechanical energy. conservative and non-conservative forces; motion in a vertical circle: Elastic and inelastic collisions in one and two dimensions.

Understanding NEET Physics Unit 4: Work, Energy, and Power

Unit 4 encompasses the study of various forms of energy, their interconversions, and the principles governing work and power. Key topics covered include:

1. Work: Work is defined as the product of force and displacement in the direction of the force. Understanding the concept of work done by forces acting on an object is crucial for solving problems related to mechanical systems.

2. Energy: Energy is the capacity to do work. This unit covers different forms of energy such as kinetic energy, potential energy, mechanical energy, and their interrelationships. Understanding the principle of conservation of energy is fundamental in this context.

3. Power: Power is the rate at which work is done or the rate at which energy is transferred or converted. It is measured in watts and is essential for understanding the efficiency of machines and systems.

Key Topics Covered in Unit 4

1. Kinetic Energy and Potential Energy: Understanding the concepts of kinetic and potential energy, and their equations (1/2 mv^2 and mgh, respectively).

2. Conservation of Mechanical Energy: Exploring scenarios where mechanical energy is conserved, such as in the absence of non-conservative forces like friction and air resistance.

3. Work-Energy Theorem: Understanding the relationship between work done on an object and the change in its kinetic energy, as described by the work-energy theorem.

4. Power and its Units: Understanding power as the rate of doing work, its units (watt), and its significance in various mechanical systems.

MCQs on NEET Physics Unit 4: Work, Energy, and Power

Now, let's put your understanding of Unit 4 concepts to the test with the following set of multiple-choice questions:

1. Which of the following statements about work is true?

   a) Work is a scalar quantity

   b) Work can be negative

   c) Work done by a force is independent of displacement

   d) Work done is always positive

2. A block of mass 2 kg is lifted vertically upward by 5 meters. What is the change in its potential energy?

   a) 10 J

   b) 20 J

   c) 30 J

   d) 40 J

3. According to the work-energy theorem, the work done on an object is equal to:

   a) Its change in kinetic energy

   b) Its change in potential energy

   c) The product of its mass and acceleration

   d) Its displacement divided by the force applied

4. Which of the following is a unit of power?

   a) Joule

   b) Watt

   c) Newton

   d) Kilogram

5. A machine can do 500 J of work in 10 seconds. What is its power?

   a) 50 W

   b) 100 W

   c) 250 W

   d) 500 W


1. b) Work can be negative

2. b) 20 J

3. a) Its change in kinetic energy

4. b) Watt

5. c) 250 W

Unit 4 - Work, Energy, and Power - is integral to NEET physics preparation, requiring a strong understanding of fundamental concepts and their applications. By mastering the principles of work, energy, and power, and practicing MCQs like the ones provided in this guide, you can enhance your problem-solving skills and improve your performance in the NEET exam. Incorporate mock tests and regular practice sessions into your study routine to maximize your preparation efforts. Stay focused, stay motivated, and success will follow in your NEET physics journey!

NEET Physics Mock Test

  • NEET Physics Mock Tests
  • MCQs on NEET Physics Unit 4 Work, Energy, and Power Test
  • The questions are given in English language only
  • You will get 60 seconds to answer each question.
  • Know your score when the test is complete

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Disclaimer: The accuracy of NEET Physics Unit 4 Work, Energy, and Power multiple choice questions and answers cannot be claimed to be 100%. Please check the answers yourself. Typing errors may occur.

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