MCQs on NEET Physics Unit 5 Rotational Motion

NEET Physics Unit 5: Rotational Motion delves into the dynamics of rotating bodies, which is essential for understanding various phenomena in physics, ranging from celestial motions to mechanical systems. Mastery of rotational motion concepts is crucial for aspiring medical professionals preparing for the NEET exam.

In this comprehensive guide, we'll explore NEET Physics Unit 5: Rotational Motion in detail and provide a set of multiple-choice questions (MCQs) to help you assess your understanding and excel in the exam. MCQs on NEET Physics Unit 5 Rotational Motion cover all topics and questions with answers that are given in the latest Physics syllabus for the NEET exam.

Syllabus of Physics Unit 5 Rotational Motion

Centre of the mass of a two-particle system, Centre of the mass of a rigid body: Basic concepts of rotational motion; moment of a force; torque, angular momentum, conservation of angular momentum and its applications; The moment of inertia, the radius of gyration, values of moments of inertia for simple geometrical objects, parallel and perpendicular axes theorems. and their applications. Equilibrium of rigid bodies. rigid body rotation and equations of rotational motion, comparison of linear and rotational motions.

Understanding NEET Physics Unit 5: Rotational Motion

Unit 5 focuses on the study of rotational motion, which involves the motion of objects around a fixed axis. Key concepts covered in this unit include:

1. Angular Displacement, Velocity, and Acceleration: Understanding the angular counterparts of linear motion parameters and their relationships.

2. Rotational Kinematics: Exploring equations of motion for rotational motion, analogous to those for linear motion.

3. Torque and Moment of Inertia: Understanding torque as the rotational equivalent of force, and moment of inertia as a measure of an object's resistance to rotational motion.

4. Newton's Second Law for Rotation: Understanding how torque is related to angular acceleration, analogous to how force is related to linear acceleration.

5. Conservation of Angular Momentum: Understanding the principle of conservation of angular momentum and its applications in rotational dynamics.

Key Topics Covered in Unit 5

1. Rotational Kinematics Equations: Understanding the relationships between angular displacement, angular velocity, angular acceleration, and time.

2. Torque and Its Effects: Understanding how torque affects rotational motion and how it is related to force and lever arms.

3. Moment of Inertia: Understanding the concept of moment of inertia, its calculation for various shapes, and its significance in rotational dynamics.

4. Angular Momentum: Understanding the concept of angular momentum, its conservation, and its applications in analyzing rotational motion.

MCQs on NEET Physics Unit 5: Rotational Motion

Now, let's put your understanding of Unit 5 concepts to the test with the following set of multiple-choice questions:

1. Which of the following is true about angular velocity?

   a) It is a vector quantity

   b) It is measured in meters per second (m/s)

   c) It is the rate of change of angular displacement

   d) It has the same direction as angular displacement

2. What is the rotational analog of mass in linear motion?

   a) Torque

   b) Angular velocity

   c) Moment of inertia

   d) Angular acceleration

3. According to Newton's second law for rotation, torque is equal to:

   a) Mass times acceleration

   b) Force times displacement

   c) Moment of inertia times angular velocity

   d) Moment of inertia times angular acceleration

4. Which of the following equations represents the relationship between torque (τ), moment of inertia (I), and angular acceleration (α)?

   a) \(τ = Iα\)

   b) \(τ = I/α\)

   c) \(τ = α/I\)

   d) \(τ = α * I\)

5. When a skater pulls in their arms while spinning, what happens to their angular velocity?

   a) It decreases

   b) It increases

   c) It remains constant

   d) It becomes zero

Answers:

1. c) It is the rate of change of angular displacement

2. c) Moment of inertia

3. d) Moment of inertia times angular acceleration

4. a) \(τ = Iα\)

5. b) It increases

Conclusion

Unit 5 - Rotational Motion - is integral to NEET physics preparation, requiring a solid understanding of rotational dynamics concepts and their applications. By mastering the principles of rotational motion 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!

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