NEET Physics: System of Particles and Rotational Motion — MCQ Test 1

Q6. What is the unit of torque in the SI system?

Q7. Vectors \( \mathbf{a} = 2 \, \hat{\mathbf{i}} + 6 \, \hat{\mathbf{j}} \) and \( \mathbf{b} = 5 \, \hat{\mathbf{i}} - 3 \, \hat{\mathbf{j}} \) are given. What is the magnitude of \( \mathbf{a} \times \mathbf{b} \)?

Q8. A \( 5 \, \text{kg} \) object moves with a velocity of \( -3 \, \hat{\mathbf{i}} + 6 \, \hat{\mathbf{j}} \, \text{m/s} \). What is the magnitude of the velocity of its center of mass?

Q9. A thin ring of mass \( 3 \, \text{kg} \) and radius \( 0.3 \, \text{m} \) has an angular momentum of \( 5.4 \, \text{kg m}^2/\text{s} \). What is its angular velocity?

Q10. A \( 2 \, \text{kg} \) mass is attached to a \( 1 \, \text{m} \) long string and rotates in a horizontal circle. If its linear speed is \( 3 \, \text{m/s} \), what is its angular momentum about the center?

Q11. A thin ring of mass \( 4 \, \text{kg} \) and radius \( 0.5 \, \text{m} \) rolls without slipping with a linear speed of \( 5 \, \text{m/s} \). What is its angular velocity?

Q12. A \( 5 \, \text{kg} \) mass rotates in a circle of radius \( 0.4 \, \text{m} \) with a speed of \( 3 \, \text{m/s} \). What is its angular momentum about the center?

Q13. Why is the vector product of two parallel vectors zero?

Q14. What is the primary difference between translational and rotational motion of a rigid body?

Q15. A hollow cylinder of mass \( 3 \, \text{kg} \) and radius \( 0.8 \, \text{m} \) rolls without slipping with an angular velocity of \( 6 \, \text{rad/s} \). What is its linear speed?

NEET Physics — System of Particles and Rotational Motion

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In pure rotational motion about a fixed axis, what is true about the motion of particles in a rigid body?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter System of Particles and Rotational Motion. It contains 15 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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15
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Key concepts covered in this specific test include Rotational, Particles, Cylinder, Velocity, Magnitude, and Represent.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. In pure rotational motion about a fixed axis, what is true about the motion of particles in a rigid body?

  • A. All particles move in straight lines
  • B. All particles move in circles with centers on the axis
  • C. Particles move randomly in all directions
  • D. Only particles on the axis move in circles

Q2. A hollow cylinder of mass \( 3 \, \text{kg} \) and radius \( 0.3 \, \text{m} \) rotates about its axis with an angular speed of \( 6 \, \text{rad/s} \). What is its rotational kinetic energy?

  • A. 4.5 J
  • B. 4.9 J
  • C. 5.2 J
  • D. 5.5 J

Q3. A \( 3 \, \text{kg} \) block moves with a velocity of \( 5 \, \text{m/s} \) along the y-axis. What is the magnitude of the velocity of its center of mass?

  • A. 3 m/s
  • B. 4 m/s
  • C. 5 m/s
  • D. 6 m/s

Q4. What does torque represent in rotational motion?

  • A. The linear force applied to a body
  • B. The rotational effect of a force about an axis
  • C. The mass distribution of a body
  • D. The velocity of rotation

Q5. In rotational kinematics, what is the rotational analogue of linear acceleration?

  • A. Angular velocity
  • B. Angular acceleration
  • C. Torque
  • D. Moment of inertia

+ 10 more questions in the actual test

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