NEET Physics: System of Particles and Rotational Motion — MCQ Test 13

Q6. In rotational dynamics, what role does torque play?

Q7. What is the effect of a force applied at the axis of rotation on a rigid body?

Q8. Vectors \( \mathbf{a} = 7 \, \hat{\mathbf{i}} + 2 \, \hat{\mathbf{j}} \) and \( \mathbf{b} = -3 \, \hat{\mathbf{i}} + 4 \, \hat{\mathbf{j}} \) are given. What is the magnitude of \( \mathbf{a} \times \mathbf{b} \)?

Q9. A \( 4 \, \text{kg} \) particle moves with velocity \( \mathbf{v} = 5 \, \hat{\mathbf{j}} \, \text{m/s} \) at \( \mathbf{r} = -3 \, \hat{\mathbf{i}} \, \text{m} \). What is the magnitude of its angular momentum about the origin?

Q10. A wheel with moment of inertia \( 4 \, \text{kg m}^2 \) rotates at \( 5 \, \text{rad/s} \). A torque of \( 8 \, \text{Nm} \) acts for \( 3 \, \text{s} \). What is its final angular velocity?

NEET Physics — System of Particles and Rotational Motion

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A thin ring of mass \( 1 \, \text{kg} \) and radius \( 0.2 \, \text{m} \) rotates about its center. If its kinetic energy is \( 4 \, \text{J} \), what is its angular speed?

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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 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Momentum, Triangular, Vertices, Coordinates, Cylinder, and Rotational.

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. A thin ring of mass \( 1 \, \text{kg} \) and radius \( 0.2 \, \text{m} \) rotates about its center. If its kinetic energy is \( 4 \, \text{J} \), what is its angular speed?

  • A. 10 rad/s
  • B. 12 rad/s
  • C. 14 rad/s
  • D. 16 rad/s

Q2. A thin ring of mass \( 3 \, \text{kg} \) and radius \( 0.5 \, \text{m} \) rotates at \( 8 \, \text{rad/s} \). What is its angular momentum about its axis?

  • A. 5.5 kg m²/s
  • B. 6.0 kg m²/s
  • C. 6.5 kg m²/s
  • D. 7.0 kg m²/s

Q3. A uniform triangular lamina has vertices at \( (0, 0) \), \( (6, 0) \), and \( (0, 8) \). What are the coordinates of its center of mass?

  • A. \( (1, 2) \)
  • B. \( (2, \frac{8}{3}) \)
  • C. \( (3, 4) \)
  • D. \( (2, 3) \)

Q4. A hollow cylinder of mass \( 5 \, \text{kg} \) and radius \( 0.2 \, \text{m} \) rotates about its axis at \( 10 \, \text{rad/s} \). What is its rotational kinetic energy?

  • A. 9 J
  • B. 10 J
  • C. 11 J
  • D. 12 J

Q5. A solid sphere of mass \( 3 \, \text{kg} \) and radius \( 0.2 \, \text{m} \) rotates at \( 15 \, \text{rad/s} \). What is its angular momentum about its axis?

  • A. 0.6 kg m²/s
  • B. 0.72 kg m²/s
  • C. 0.8 kg m²/s
  • D. 1.0 kg m²/s

+ 5 more questions in the actual test

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