Chapter-4: Motion In A Plane

1. Which of the following is not a scalar quantity?

  • Temperature
  • Charge
  • Coefficient of friction
  • Impulse
Answer
Impulse

2. Which of the following is a scalar quantity?

  • Electric current
  • Linear momentum
  • Acceleration
  • Electric field.
Answer
Electric current

3. Which of the following is a vector quantity?

  • Gravitational potential,
  • Electric current
  • Current density
  • Angle.
Answer
Current density

4. Which of the following is a vector quantity?

  • Time
  • Displacement
  • Speed
  • Distance
Answer
Displacement

5. Which of the following is scalar?

  • Velocity
  • Speed
  • Displacement
  • Force
Answer
Speed

6. Which of the following is a vector?

  • Energy
  • Work
  • Potential
  • Momentum
Answer
Momentum

7. Angular displacement in unit time is called –

  • Angular velocity
  • Angular movement
  • Angular acceleration
  • Frequency

 

Answer
Angular velocity

8. Rate of change of angular velocity is called –

  • Angular momentum
  • Angular displacement
  • Frequency
  • Angular acceleration
Answer
Angular acceleration

9. Path followed by the projectile is –

  • Straight line
  • Circular
  • Ellipse
  • Parabolic
Answer
Parabolic

10. When a particle moves on a circular path then the force that keeps it moving with uniform velocity is –

  • Centripetal force
  • Gravitational force
  • Internal force
  • Atomic force.
Answer
Centripetal force

11. In circular motion –

  • The direction of motion is fixed
  • The direction of motion changes continuously
  • Acceleration is zero
  • None of these.
Answer
The direction of motion changes continuously

12. Force responsible for the circular motion of the body is –

  • Centripetal force
  • Gravitational force
  • Centrifugal force
  • None of these
Answer
Centripetal force

13. A particle revolves around a circular path. The acceleration of the particle is inversely proportional to –

  • Radius
  • Velocity
  • Mass of particle
  • Radius and Velocity
Answer
Radius