CBSE  /  Class 11  /  Physics  /  Motion in a Plane

  • 1. 
    The path followed by a projectile is called its?

  • Territory
  • Treasury
  • Tractor
  • Trajectory

  • 2. 
    One radian is defined to be the angle subtended where the arc length S is exactly equal to the?

  • radius of the circle.
  • diameter of the circle.
  • circumference of the circle.
  • half of radius of the circle.

  • 3. 
    A car sometimes overturns while taking a turn. When it overturns, it is

  • the inner wheel which leaves the ground first
  • either inner wheel or the outer wheel leaves the ground
  • both the wheel leave the ground simultaneously
  • the outer wheel which leaves the ground first

  • 4. 
    A body travels along the circumference of a circle of radius 2 m with a linear velocity of 6 m/s . Then its angular velocity is

  • 6 rad /s
  • 3 rad /s
  • 2 rad / s
  • 4 rad / s

  • 5. 
    The centripetal component of acceleration arises when?

  • The direction of motion is changed.
  • The direction propagation is changed.
  • The direction of gravity is changed.
  • The direction of projectile is changed.

  • 6. 
    The word centripetal is derived from two Greek words meaning?

  • Seeking the situation.
  • Seeking the centre.
  • Touching the centre.
  • Leaving the centre.

  • 7. 
    A car is moving with a speed of 30 m/s on a circular path of radius 500 m. Its speed is increasing at the rate of 2 m/s². The acceleration of the car is

  • 2 m/s²
  • 9.8 m/s²
  • 1.8 m/2
  • 2.7 m/s²

  • 8. 
    One radian is equal to?

  • 57.7o
  • 53.7o
  • 59.3o
  • 57.3o

  • 9. 
    A body is moving along a circle with an increasing speed. It possesses?

  • centripetal acceleration only (ac)
  • tangential acceleration only (ar)
  • both tangential and centripetal acceleration (ar and ac)
  • No acceleration

  • 10. 
    The path of a particle is given by the expression y = at + bt², where a and b are constants . Y is the displacement at time t. Its velocity at any instant is given by

  • a + 2bt
  • zero
  • 2bt
  • at
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