JAC Class 11 Physics MCQ Chapter-6: System Of Particles And Rotational Motion

1. The unit of the radius of gyration is –

  • Kg m²
  • m
  • Kg
  • Kg m
Answer
m

2. A couple produces –

  • Only linear motion
  • Only rotational motion
  • Linear and rotational motion both
  • No motion
Answer
Only rotational motion

3. The center of mass of a body –

  • Lies always at the geometrical center
  • Lies always inside the body
  • Lies always outside the body
  • May lie within or outside the body
Answer
May lie within or outside the body

4. Moment of linear-momentum is-

  • Couple
  • Angular-momentum
  • Impulse
  • Torque
Answer
Angular-momentum

5. S. I. unit of moment of inertia is –

  • Kgm
  • Kgm⁻¹
  • Kgm²
  • Kgm⁻²
Answer
Kgm²

6. Radius of gyration of a body depends upon –

  • axis of rotation
  • translational motion
  • the shape of the body
  • area of the body
Answer
axis of rotation

7. The unit of the Torque is –

  • N
  • Nm²
  • Nm
  • None of these.
Answer
Nm

8. The center of mass of a system of particles does not depend on –

  • Masses of the particles
  • Forces on the particles
  • Position of the particles
  • The Relative distance between the particles
Answer
Forces on the particles

9. Angular momentum is –

  • Axial vector
  • Scalar
  • Polar vector
  • None of these
Answer
Axial vector

10. Analogue of mass in rotational motion is –

  • moment of inertia
  • torque
  • radius of gyration
  • angular momentum
Answer
moment of inertia

11. Unit of angular momentum is-

  • N-m
  • Kg.m/s²
  • Kg.m/s
  • Kg²m/s²
Answer
Kg.m/s²

12. The moment of inertia of a body does not depend upon-

    • Axis of rotation
    • Mass
    • Distribution of mass
    • Angular velocity
Answer
Angular velocity

13. A shell at rest explodes. The center of mass of the fragments-

  • Moves along a particle path
  • Moves along an elliptical path
  • Moves along a straight line
  • Remains at rest.
Answer
Remains at rest.

These JAC MCQs for class 11 Physics will help students prepare for the board exam. For more study materials, such as solutions, model papers, syllabus, MCQ Questions, and the latest updates on the JAC Board, please visit our website at JACBoardSolutions.com.

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